JAMB UTME - Economics - 2025

Akọwa Nkọwa

A rise in government expenditure injects additional money into the economy. When the government spends more on infrastructure, salaries, transfers, or public services, aggregate demand increases. If the economy is already operating near full capacity, this increased demand cannot be matched by a proportional increase in the supply of goods and services. The result is higher inflation, a sustained rise in the general price level.

This outcome is explained by demand-pull inflation: excess demand relative to available supply bids up prices across the economy.

Higher government spending does not lead to higher unemployment; it typically reduces unemployment by creating jobs and stimulating economic activity. It does not directly cause lower profits for industries, since increased demand often boosts sales and revenue. It also does not lower importation of raw materials; in fact, higher economic activity often increases imports as firms need more inputs to meet rising demand.

The link between increased government expenditure and inflation is a central concept in fiscal policy analysis and is especially relevant when an economy is near or at full employment.

Akọwa Nkọwa

Inflation is a sustained increase in the general price level. One of its key disadvantages is that fixed income earners lose.

People on fixed incomes, such as pensioners, civil servants on fixed salaries, and recipients of fixed-interest investments, receive the same nominal amount of money regardless of price changes. As prices rise during inflation, their money buys fewer goods and services, so their real income (purchasing power) declines. They become worse off even though their nominal income stays the same.

The statement that the standard of living rises is incorrect because inflation generally erodes living standards for most of the population, especially those who cannot negotiate higher wages quickly enough. Fixed income earners gaining is the opposite of what happens. Businessmen, in general, may actually benefit from inflation because the prices of their goods rise, and if they hold stocks of goods, the value of those stocks increases. They are typically among the groups that gain from inflation, not lose.

In examination questions on inflation, always distinguish between nominal values (the face value of money) and real values (what money can actually buy). Inflation reduces real values while nominal values may stay the same or even rise.

Akọwa Nkọwa

Geographical distribution of population refers to how people are spread across different areas of a country or region. Several factors influence where people choose to settle, and among the options given, climatic conditions is the one that directly affects geographical distribution.

Areas with favourable climates (moderate temperatures, adequate rainfall, fertile soil) tend to attract denser settlements because they support agriculture, comfortable living, and economic activity. In contrast, regions with extreme climates (deserts, very cold areas, dense tropical forests) tend to be sparsely populated because they are less hospitable for farming and habitation.

Encouragement of early marriages in rural areas affects the rate of population growth (birth rate), not the spatial distribution of people across regions. High birth rate and high death rate are components of population change (natural increase or decrease), but they do not explain why people are concentrated in some areas and sparse in others. These factors influence the size of a population, not its geographical spread.

Climate, along with other geographical factors like terrain, water availability, and natural resources, is a primary determinant of where people live within a country.

Akọwa Nkọwa

Division of labour is the practice of breaking a production process into separate, specialised tasks and assigning each task to a different worker. An entrepreneur adopts division of labour primarily because it leads to increased output and lower cost of production.

When workers specialise in one task, they become faster and more skilled at it through repetition. This increased efficiency raises total output. At the same time, because each worker is more productive, the cost per unit of output falls. Additional benefits include reduced time lost in switching between tasks and the ability to use specialised tools and machinery suited to each step of production.

The option stating it leads to increased cost and lower output describes the exact opposite of what division of labour achieves. While division of labour does not directly aim to provide more employment opportunities (in fact, increased efficiency can sometimes reduce the number of workers needed), the entrepreneur's motivation centres on productivity gains and cost reduction, not job creation. The option about equal cost and employment opportunities does not reflect any recognised outcome of specialisation.

Akọwa Nkọwa

Double counting is the error that leads to an overestimation of national income. It occurs when the value of a good is counted more than once as it passes through different stages of production.

For example, if a farmer sells wheat to a flour mill, the mill sells flour to a bakery, and the bakery sells bread to consumers, the value of the wheat is embedded in the flour price, which is in turn embedded in the bread price. If you add the sales value at every stage without subtracting intermediate inputs, you count the wheat's value three times, the milling value twice, and only the baking value once. The resulting total far exceeds the actual value of final goods produced, inflating the national income figure.

To avoid this, national income accountants use either the value-added method (counting only the value added at each stage) or count only the value of final goods and services.

Wrong timing of computation may shift income between periods but does not systematically inflate the total. Changes in prices within the year can distort comparisons between years but are handled by using constant prices. Incomplete statistical data would, if anything, lead to an underestimate because unrecorded economic activity is omitted from the count.

Akọwa Nkọwa

Large-scale agriculture involves farming on extensive areas of land using modern, mechanized methods to maximize output. Its advantages include:

• Use of sophisticated implements such as tractors, combine harvesters, and irrigation systems, which increase efficiency and yield.
• Integration of crop and animal farming, which allows diversification, reduces risk, and makes use of animal waste as manure.
• Increase in employment, as large farms require workers for various specialized roles including machine operation, management, processing, and distribution.

The use of simple implements (such as hoes, cutlasses, and hand tools) is characteristic of small-scale or subsistence farming, not large-scale agriculture. In fact, one of the defining features of large-scale farming is the replacement of simple hand tools with advanced machinery to achieve greater productivity per hectare and per worker.

Therefore, the use of simple implements is not an advantage of large-scale agriculture.

Akọwa Nkọwa

The Economic Community of West African States (ECOWAS), established in 1975, aims to promote economic integration and cooperation among its member states. Its major achievement has been widening the market for goods produced within the region.

By reducing trade barriers among member countries, ECOWAS has created a larger regional market that allows goods produced in one member state to be sold more easily across the region. This expanded market benefits producers by giving them access to a larger customer base, which can support economies of scale and encourage greater production and investment.

ECOWAS has not achieved a common currency across all member states. While there have been plans and discussions about a common currency (the Eco), it has not been implemented across the community. The suggestion that ECOWAS increased members' allegiance to former colonial masters is incorrect; ECOWAS was created partly to reduce such dependence and strengthen intra-African cooperation. While ECOWAS facilitates some capital mobility through its protocols on free movement of persons, goods, and capital, this has not been its most prominent achievement compared to the market-widening effect.

Akọwa Nkọwa

Net migration measures the overall effect of migration on a country's population. It is calculated as the difference between the number of immigrants (people moving into the country) and the number of emigrants (people leaving the country) over a given period.

The formula is:

\[ \text{Net Migration} = \text{Number of Immigrants} - \text{Number of Emigrants} \]

If the result is positive, more people entered the country than left, and the country experienced net immigration. If negative, more people left than arrived, indicating net emigration.

The other options do not define net migration. Per capita income and population are measures of economic output and population size respectively. Internal and external migration are categories of migration based on whether movement occurs within or across national borders, but their difference does not define net migration. Population and census are general demographic concepts unrelated to the migration calculation.

When revising population topics, remember that net migration, along with the birth rate and death rate, determines the overall change in a country's population size.

Akọwa Nkọwa

The fundamental economic problem is scarcity - human wants are unlimited, but the resources available to satisfy those wants are limited. Economic problems arise mainly because of these limitations in the availability of resources.

Because resources (land, labour, capital, and entrepreneurship) are scarce relative to the unlimited desires of society, choices must be made about how to allocate them. This gives rise to the three basic economic questions: what to produce, how to produce, and for whom to produce. Every choice involves an opportunity cost - the next best alternative forgone.

While lack of foresight, inaccurate data, and wastage of resources are real problems that can worsen economic outcomes, they are not the primary cause of economic problems. Even with perfect foresight, accurate statistics, and zero waste, economic problems would still exist because resources remain limited relative to wants. Scarcity is the root cause from which all other economic problems stem.

For examinations, always connect the concept of scarcity to the need for choice and opportunity cost - these three ideas form the foundation of economics.

Akọwa Nkọwa

Price discrimination is the practice by which a seller charges different prices to different groups of buyers for the same good or service, where the price differences are not justified by differences in cost of production or delivery.

For price discrimination to be possible, certain conditions must hold:

• The seller must have some degree of market power (ability to influence price, typically a monopolist or firm with significant market share).
• The seller must be able to identify and separate different groups of buyers (by age, location, time of purchase, income level, etc.).
• There must be no possibility of resale (arbitrage) between the groups - buyers who get the lower price cannot resell to those who would pay the higher price.

Examples include cinemas charging different ticket prices for students, adults, and seniors; airlines charging different fares for the same seat depending on when the ticket is purchased; and electricity companies charging different rates for domestic and industrial users.

This concept is distinct from monopolistic competition (a market structure), monopoly (a single seller), and price determination (the process by which market price is established through supply and demand).

Akọwa Nkọwa

In economics, the term factor intensity describes which factor of production is used in the greatest proportion relative to others. When an agricultural production process uses more machinery relative to labour, it is described as capital intensive farming.

Capital, in economics, refers to man-made aids to production - machinery, equipment, tools, irrigation systems, storage facilities, and other physical assets used in the production process. Capital intensive farming relies heavily on these inputs rather than on manual human labour. Examples include using tractors instead of hand-held hoes, combine harvesters instead of manual cutting, and automated irrigation systems instead of hand-watering.

The other options describe different concepts:

• Land intensive farming would emphasize the use of large tracts of land relative to other factors.
• Large scale farming refers to the size of the farming operation, not specifically the ratio of machinery to labour.
• Commercial farming refers to farming for profit and sale rather than subsistence, regardless of how mechanized it is.

The specific emphasis on machinery relative to labour is the hallmark of capital intensive production.

Akọwa Nkọwa

When commodity X and commodity Y are supplied jointly (produced together as a result of the same production process), an increase in demand for X will increase the supply of Y.

Joint supply means that producing one commodity automatically produces the other. Classic examples include beef and leather (both come from cattle) or petrol and kerosene (both come from refining crude oil). If demand for X rises, producers respond by increasing production of X. Because X and Y are produced together, any increase in the production of X inevitably produces more Y as well. The supply of Y therefore increases as a by-product.

The other statements are incorrect:

• "An increase in demand for Y will raise the price of X" - In fact, increased production of Y (to meet demand) brings more X onto the market as well, which tends to lower the price of X (increased supply of X pushes its price down), not raise it.
• "An increase in demand for X will cause less of Y to be produced" - The opposite is true. More X means more Y, not less, because they are produced together.
• "An increase in demand for X will leave the supply of Y unchanged" - This is also incorrect. The supply of Y will increase because producing more X necessarily produces more Y.

Akọwa Nkọwa

The balance of trade is the difference between the value of a country's visible exports and visible imports over a specific period. Visible trade refers to the import and export of physical, tangible goods such as crude oil, machinery, textiles, and agricultural products.

The formula is:

\[ \text{Balance of Trade} = \text{Value of Visible Exports} - \text{Value of Visible Imports} \]

If exports exceed imports, the country has a favourable (surplus) balance of trade. If imports exceed exports, it has an unfavourable (deficit) balance of trade.

It is important to distinguish the balance of trade from the balance of payments. The balance of payments is a broader concept that includes both visible trade (goods) and invisible trade (services such as banking, insurance, tourism, and shipping), as well as capital transfers and financial flows. An option describing the relationship between both visible and invisible receipts refers to the balance of payments, not the balance of trade.

For examinations, remember: balance of trade covers goods only (visible items), while balance of payments covers goods, services, and capital movements.

Akọwa Nkọwa

A shift of the demand curve to the right means that at every given price, consumers are willing and able to buy a larger quantity of the good than before. This is different from a movement along the demand curve, which is caused by a change in the price of the good itself.

An increase in consumers' income shifts the demand curve for a normal good (such as cocoa) to the right. When consumers earn more, they have greater purchasing power and are willing to buy more cocoa at each price level. This is a change in a non-price determinant of demand, which causes the entire curve to shift.

A rise in the price of cocoa would cause a movement along the existing demand curve (a decrease in quantity demanded), not a shift of the curve. A fall in the quantity demanded of cocoa similarly describes a movement along the curve. A tax on cocoa producers affects the supply side of the market, shifting the supply curve rather than the demand curve.

Other factors that shift the demand curve to the right include an increase in population, a rise in the price of substitute goods, a fall in the price of complementary goods, and a change in consumer tastes in favour of the product.

Akọwa Nkọwa

In economics, land as a factor of production refers to all natural resources, including the physical surface of the earth, minerals, water bodies, forests, and the atmosphere. A key characteristic that distinguishes land from other factors of production is that its total supply is fixed.

Unlike labour, which can grow through population increase and training, or capital, which can be accumulated through investment, the total quantity of land available on the earth cannot be increased. No amount of demand or price increase can create more land. While specific parcels can be improved (e.g., through reclamation or irrigation), the aggregate supply of natural resources as a whole remains constant.

The supply of land does not vary meaningfully with time in economic terms. Saying it is higher in urban than rural areas confuses the density of human settlement with the actual supply of the factor of production. Likewise, the supply of land does not rise with demand, which is precisely what makes it unique among the factors of production and why economists describe its supply curve as perfectly inelastic (vertical).

Akọwa Nkọwa

Capitalism (also called a free market or free enterprise system) is an economic system in which the means of production are privately owned and economic decisions are driven by the profit motive and market forces. One of its key advantages is the efficient allocation of resources.

In a capitalist economy, resources are allocated through the price mechanism. Producers, motivated by profit, direct resources toward goods and services that consumers demand most. Competition among firms drives innovation, reduces waste, and pushes firms to produce at the lowest possible cost. Consumers signal their preferences through their spending decisions, and the market responds accordingly. This decentralised coordination tends to allocate resources more efficiently than central planning.

The other options either describe disadvantages or are inaccurate:

• Private initiative being discouraged contradicts capitalism's core principle - capitalism actively encourages private initiative and entrepreneurship.
• Job security is not assured in capitalism; workers can be hired and fired based on market conditions, which is often cited as a disadvantage.
• Consumer exploitation is a criticism of capitalism (through monopoly power or information asymmetry), not an advantage.

Akọwa Nkọwa

Net Domestic Product (NDP) measures the total value of goods and services produced within a country's borders after accounting for the wear and tear on capital goods used in production.

The correct formula is:

\[\text{NDP} = \text{GDP} - \text{Depreciation}\]

GDP (Gross Domestic Product) measures total output within a country's borders without deducting for capital consumed in the production process. Depreciation (also called capital consumption allowance) represents the value of capital assets (machinery, equipment, buildings) that wore out or became obsolete during the production period.

Subtracting depreciation from GDP gives a more accurate picture of the economy's net productive capacity, since some of the gross output merely replaces worn-out capital rather than representing a genuine addition to wealth.

The other options are incorrect:

• GNP minus depreciation gives Net National Product (NNP), not NDP. GNP includes net income from abroad, which NDP excludes.
• GDP multiplied by net income from abroad is not a recognized economic formula.
• The option written as "NDP - GDP + Net Income from abroad" rearranges terms incorrectly and does not represent the standard NDP formula.

Akọwa Nkọwa

In economics, the satisfaction or pleasure a consumer derives from using or consuming a good or service is called utility. Utility is a core concept in consumer theory and underpins the analysis of demand, choice, and resource allocation.

Utility can be measured in two ways: cardinal utility assigns numerical values to satisfaction (utils), while ordinal utility simply ranks preferences without attaching specific numbers. In both frameworks, the term for the satisfaction itself is utility.

Elasticity refers to the responsiveness of one economic variable (such as quantity demanded) to a change in another variable (such as price). Wealth refers to the stock of valuable assets owned by a person or nation, not the satisfaction from consuming a single commodity. Demand describes the quantity of a good consumers are willing and able to buy at various prices, not the satisfaction obtained from consuming it.

Akọwa Nkọwa

A consumers' co-operative society is a type of business organisation formed by a group of individuals who pool their resources together to buy goods in bulk and distribute them among themselves at fair prices. The defining feature of any co-operative society is that it is owned and controlled by its members, who each have an equal vote regardless of the size of their financial contribution.

Members join by purchasing shares in the society, and the profits (called surplus or dividends) are distributed among them in proportion to their patronage, not their shareholding. The management committee is elected by the members to run the day-to-day operations, but the committee does not own the society - it acts on behalf of the membership. Debenture holders are creditors who lend money to organisations and earn interest; they have no ownership stake. The government plays no role in owning a co-operative society, although it may register and regulate co-operatives through legislation.

The correct answer is that a consumers' co-operative society is owned by the members of the society. This is the foundational principle of all co-operative organisations worldwide, enshrined in the Rochdale Principles that guide co-operative practice.

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OPEC stands for the Organization of the Petroleum Exporting Countries. It is an intergovernmental organisation founded in 1960 by five oil-producing nations (Iran, Iraq, Kuwait, Saudi Arabia, and Venezuela). Its primary purpose is to coordinate and unify petroleum policies among member countries to ensure stable oil markets and a steady income for oil-producing nations.

The key word in the acronym is Petroleum, not "Petrol." Petroleum refers to crude oil and its derivatives in the broadest sense, encompassing all hydrocarbon resources extracted from the ground. "Petrol" is a narrower term referring specifically to refined motor fuel (gasoline), which does not capture the full scope of what OPEC member countries export.

The other options use incorrect expansions: "Oil and Petroleum Exporting Countries" begins with "Oil" rather than "Organization," and "Organic Petroleum Exporting Countries" substitutes a scientifically meaningless qualifier. Neither matches the established name of the organisation.

Nigeria joined OPEC in 1971 and is one of the key African member states of the organisation.

Akọwa Nkọwa

The equilibrium price is the price at which the quantity demanded by consumers equals the quantity supplied by producers. At this price, there is no surplus (excess supply) and no shortage (excess demand), so the market "clears" - every unit offered for sale finds a buyer.

For this reason, another term for equilibrium price is the market clearing price.

Demand price refers to the maximum price a consumer is willing to pay for a given quantity, which is not the same as the equilibrium price unless it happens to coincide with the supply price. "Satisfactory price" is not a standard economic term. A price floor is a government-imposed minimum price set above the equilibrium to protect producers (as in minimum wage legislation or agricultural price supports), which is the opposite of the market-determined equilibrium.

In examinations, if you see "equilibrium price," "market clearing price," or "market price" used interchangeably, they all refer to the point where the demand and supply curves intersect.

Akọwa Nkọwa

Infant mortality refers to the death of children under the age of one year. Since it measures deaths, it is a component of the death rate (also called the mortality rate) of a country.

The death rate is defined as the number of deaths per thousand of the population per year. Infant mortality is a subset of overall mortality and is one of the most closely watched indicators within it, as it reflects the quality of healthcare, nutrition, and sanitation in a country.

Net migration refers to the difference between the number of people entering a country (immigrants) and those leaving (emigrants), which has nothing to do with infant deaths. The fertility rate measures the average number of children born per woman, which relates to births, not deaths. The immigration rate measures only the inflow of people into a country from abroad.

Population growth is determined by the formula: Population Growth = (Birth Rate - Death Rate) + Net Migration. Infant mortality feeds into the death rate component of this equation.

Akọwa Nkọwa

For something to qualify as money, it must satisfy several key characteristics, one of the most important being general acceptability. Money must be widely accepted by all members of a society as a medium of exchange in transactions for goods and services.

Cheques are not money because they are not generally acceptable as a medium of exchange. A cheque is merely an instruction to a bank to transfer funds from one account to another. Not everyone will accept a cheque in payment - a market trader, a taxi driver, or a small shop may refuse it. A cheque can also bounce if the drawer has insufficient funds, which makes it less reliable than cash. For these reasons, cheques function as a means of transferring money rather than being money itself.

The fact that cheques are used during business hours is not the defining reason they are excluded from being money - many forms of payment have time limitations. The scarcity of banks in rural areas is a practical challenge but does not address the definitional issue. Government issuance is not a strict requirement for something to be money; coins and notes are issued by the central bank, but the key test remains general acceptability.

Akọwa Nkọwa

The characteristics listed - acceptability, durability, homogeneity, and portability - are all well-established attributes of good money. For any commodity or item to function effectively as money, it must satisfy several key properties:

• Acceptability - money must be widely accepted by everyone in the economy as a medium of exchange.
• Durability - money must be able to withstand wear and tear over time without losing its value or physical integrity.
• Homogeneity - every unit of money of the same denomination must be identical and interchangeable (a 100-naira note is the same as any other 100-naira note).
• Portability - money must be easy to carry from one place to another for transactions.

Other important attributes of good money include divisibility, stability of value, scarcity, and cognisability (easy to recognise). These attributes collectively ensure that money can efficiently perform its functions as a medium of exchange, store of value, unit of account, and standard of deferred payment.

Markets, government, and banks are institutions that use or regulate money, but they are not themselves described by these physical and functional attributes.

Akọwa Nkọwa

Direct taxes are taxes levied directly on the income or wealth of individuals and organizations. Examples include personal income tax, company income tax, capital gains tax, and property tax. While direct taxes have several advantages (such as being equitable and certain), they also have notable disadvantages.

One key disadvantage is that direct taxes can be evaded. Tax evasion occurs when taxpayers deliberately underreport their income, overstate their deductions, hide assets, or fail to file tax returns in order to reduce or eliminate their tax liability. This is possible because direct taxes rely on taxpayers' honest declaration of their earnings, and enforcement agencies cannot always verify every individual's true income.

Self-employed individuals and business owners, in particular, may find it easier to evade direct taxes by keeping transactions off the books or operating in the informal economy.

The other options do not describe disadvantages of direct taxes:

• Being progressive (where higher earners pay a larger percentage) is generally considered an advantage, as it promotes equity.
• "Not being rigid" is not a recognized disadvantage of direct taxes.
• Allocating scarce resources is a function of the price mechanism, not a characteristic of direct taxes.

Akọwa Nkọwa

A stock exchange is a formal, regulated marketplace where securities - such as shares (stocks), bonds, debentures, and government securities - are bought and sold. It provides a platform for companies to raise capital by issuing shares to the public and for investors to trade those shares among themselves.

The correct answer is that a stock exchange deals with the purchase and sale of securities. Key functions of a stock exchange include:

• Providing a secondary market where existing securities can be traded, giving investors liquidity.
• Facilitating price discovery through the forces of supply and demand.
• Protecting investors through regulations, listing requirements, and transparency rules.
• Mobilising savings and channelling them into productive investment.

A stock exchange does not deal with the exchange of physical commodities - that is the function of a commodity exchange or commodity market. The other two options are nonsensical distractors that do not describe any recognised financial market.

Examples of stock exchanges include the Nigerian Stock Exchange (now Nigerian Exchange Group), the London Stock Exchange, and the New York Stock Exchange.

Akọwa Nkọwa

A developing country is characterised primarily by a low income per head (low per capita income). Per capita income measures the average income earned per person in a country and is the most widely used indicator of a nation's level of economic development.

When income per head is low, it signals that the country's total output relative to its population is small, which typically correlates with limited industrialisation, lower standards of living, inadequate infrastructure, and reduced access to healthcare and education.

Low labour supply does not define a developing country. In fact, many developing countries have abundant labour, often with high rates of underemployment. A decreasing population is not a characteristic of developing nations either; most developing countries experience population growth rather than decline. A high contribution of the tertiary (services) sector to national income is actually a feature of developed economies, where the economy has progressed beyond primary and secondary production into services, finance, and technology.

The defining feature remains low per capita income, which reflects the overall economic productivity and living standards of the population.

Akọwa Nkọwa

During inflation, the general price level rises, which means money loses purchasing power over time. This dynamic creates winners and losers depending on whether one holds money or owes money.

Borrowers of money gain during inflation because they repay their loans with money that is worth less than when they originally borrowed it. If someone borrows 100,000 naira today and repays it after a period of significant inflation, the real value of that repayment is lower than the real value of what was borrowed. The borrower effectively repays less in real terms.

Conversely, money lenders (creditors) lose during inflation because the money they receive in repayment buys fewer goods and services than the money they originally lent out. Their real return is eroded. Wage earners, especially those on fixed wages, also lose because their nominal pay buys less as prices rise. While borrowing may increase during inflation (as people try to buy assets before prices rise further), the question asks about an effect of inflation, and the direct economic effect is that borrowers gain at the expense of lenders.

Akọwa Nkọwa

Economic underdevelopment is characterized by a set of structural weaknesses that keep a country's standard of living low. Typical features include:

• Monocultural economy - heavy dependence on a single product or sector for export earnings, making the economy vulnerable to price fluctuations.
• Low life expectancy - poor healthcare, nutrition, and sanitation lead to shorter average lifespans.
• Income inequality - a wide gap between the rich and the poor, with wealth concentrated in the hands of a few.

High productivity, however, is a hallmark of economically developed countries. Developed nations achieve high output per worker through advanced technology, skilled labour, efficient management, and strong capital investment. Underdeveloped economies, by contrast, suffer from low productivity due to outdated technology, inadequate infrastructure, limited education, and poor capital formation.

Since high productivity is associated with development rather than underdevelopment, it is the feature that does not belong in the list of characteristics of economic underdevelopment.

Akọwa Nkọwa

The question asks which function distinguishes commercial banks ("the former") from the central bank. To answer this, you need to identify which activity is performed by commercial banks but not by the central bank.

Accepting deposits from the public is the core business of commercial banks. They operate current accounts, savings accounts, and fixed deposit accounts for individuals and businesses. The central bank does not provide these retail banking services to the general public; it deals primarily with the government and other banks.

The remaining options describe functions of the central bank:

• Servicing the public debt - the central bank manages government borrowing, issues government securities, and handles debt repayment on behalf of the government.
• Regulating foreign exchange - the central bank controls the country's foreign exchange reserves and manages the exchange rate.
• Acting as a lender of last resort (likely intended by "leader of last resort") - the central bank provides emergency lending to commercial banks facing liquidity crises.

Since accepting deposits from the public is a commercial bank function that the central bank does not perform, it is the distinguishing feature.

Akọwa Nkọwa

Production is classified into three broad categories based on the nature of economic activity:

• Primary production involves the extraction or harvesting of natural resources directly from the earth or sea. This includes farming, fishing, forestry, mining, and quarrying.
• Secondary production involves manufacturing and construction, where raw materials from primary production are transformed into finished or semi-finished goods.
• Tertiary production (also called services production) involves the provision of services such as banking, transportation, teaching, and healthcare.

The exploitation of mineral resources (mining of gold, tin, crude oil, coal, iron ore, etc.) is the extraction of raw materials directly from the earth. This falls squarely under primary production.

It is not secondary production because the minerals are being extracted, not processed into manufactured goods. It is not tertiary or services production because it involves physical extraction of tangible resources, not the delivery of services.

Akọwa Nkọwa

The income approach to calculating Gross National Product (GNP) includes all income earned by the factors of production, i.e.,
rent, wages, interest, and profit. Direct taxes paid by persons and companies are not included in the calculation of GNP. Therefore,
the correct answer is 'direct taxes paid by persons and companies'.

Akọwa Nkọwa

The supply curve shows the relationship between the price of a good and the quantity that producers are willing and able to supply. A standard market supply curve slopes upward from left to right, which means that as price increases, quantity supplied increases, and as price decreases, quantity supplied decreases.

This upward slope indicates that at a lower price, less is supplied. Producers are less willing to supply goods at lower prices because lower prices mean lower revenue and potentially lower profit margins. Conversely, higher prices give producers a greater incentive to supply more, as the higher revenue makes production more profitable and can justify the higher marginal costs of producing additional units.

The statement that at a lower price more is supplied contradicts the upward slope described in the question. The ability to supply two commodities at the same time and the level of taxes paid by producers are not what the slope of the supply curve indicates.

The positive relationship between price and quantity supplied is known as the law of supply.

Akọwa Nkọwa

Development plans in West African countries have historically struggled to meet their stated targets. While several factors contribute to this, the main reason is political instability.

Political instability disrupts development planning in several critical ways:

• Policy discontinuity - when governments change through coups or irregular transitions, incoming leaders often abandon the plans of their predecessors and introduce new ones, wasting resources already committed to earlier projects.
• Diversion of resources - political crises redirect funds from development projects to security and conflict management.
• Loss of investor confidence - both domestic and foreign investors withdraw capital from politically unstable environments, reducing the funding available for planned projects.
• Institutional disruption - the civil service and implementing agencies are reorganized or purged after political transitions, destroying institutional memory and capacity.

While low education levels, high population growth, and lack of manpower all pose challenges, they are more gradual and predictable constraints. Political instability, by contrast, can abruptly derail an entire national development plan, making it the primary reason for deviation from targets in the West African context.

Akọwa Nkọwa

In the long run, all factors of production are variable, and a firm can change its scale of operation (plant size, workforce, equipment). A firm's average cost decreases in the long run because of increasing returns to scale, which is the source of economies of scale.

Increasing returns to scale means that when a firm increases all its inputs by a certain proportion, its output increases by a greater proportion. For example, if a firm doubles all its inputs and output more than doubles, the cost per unit of output falls. This happens because of advantages such as:

• Technical economies - larger machines and production lines operate more efficiently.
• Managerial economies - specialist managers can be employed for different functions.
• Purchasing economies - bulk buying of raw materials at discounted prices.
• Financial economies - larger firms can borrow at lower interest rates.

Decreasing marginal returns and diminishing average returns are short-run concepts related to adding more of one variable factor while others are fixed; they cause costs to rise, not fall. Decreasing average fixed cost is a short-run phenomenon (spreading fixed costs over more output) and does not explain the long-run decline in average cost, which requires a change in the scale of all inputs.

Akọwa Nkọwa

A country's balance of payments is a comprehensive record of all economic transactions between its residents and the rest of the world over a given period. It has two main components: the current account (covering visible and invisible trade) and the capital account (covering financial flows).

The balance of payments is said to be in deficit when the total payments for both visible imports (physical goods) and invisible imports (services such as shipping, insurance, tourism, and interest payments) exceed the total receipts from exports of visible and invisible goods. In other words, more money is flowing out of the country than is coming in.

The other options are incorrect because:

• A situation where only invisible payments exceed invisible receipts describes a deficit on the invisible trade balance alone, not the overall balance of payments.
• When total receipts exceed total payments, that describes a balance of payments surplus, not a deficit.
• Recording a surplus on the current account contradicts the concept of a deficit.

Akọwa Nkọwa

Table I above illustrates the law of diminishing marginal utility. The law of diminishing marginal utility states that as a person
increases consumption of a product while keeping consumption of other products constant, there is a decline in the marginal
utility that person derives from consuming each additional unit of that product. In the table, as the units of quantity consumed increase, the marginal utility decreases.

Akọwa Nkọwa

The location of industries is influenced by factors that make production efficient, profitable, and sustainable. Positive locational factors include nearness to the market (which reduces distribution costs), government influence in siting industries (through incentives, industrial estates, or infrastructure provision), and availability of infrastructural facilities such as roads, electricity, and water supply.

Political instability, on the other hand, discourages industrial location. When a country or region experiences frequent political upheaval, investors face risks such as destruction of property, policy reversals, disruption of supply chains, and loss of confidence in the business environment. No rational investor would deliberately locate a factory in an area prone to political violence or sudden changes in government policy that could confiscate assets or void contracts.

Therefore, political instability is the factor that does not encourage the location of industries.

Akọwa Nkọwa

In developing (poorer) countries, the economy is typically dominated by the primary sector, of which agriculture is by far the largest component. A large percentage of the labour force is engaged in agriculture because:

• Agriculture is the most accessible economic activity, requiring relatively low capital investment and basic skills.
• Poorer countries often lack the infrastructure, technology, and capital needed for large-scale manufacturing or mining.
• Subsistence farming is the main source of livelihood for rural populations, which form the majority in developing nations.
• The industrial and service sectors are not sufficiently developed to absorb the available labour force.

As countries develop economically, the labour force gradually shifts from the primary sector (agriculture) to the secondary sector (manufacturing and industry) and then to the tertiary sector (services). This pattern of structural change is described by the Clark-Fisher model of economic development.

Manufacturing, trading, and mining are sectors that expand as a country industrialises, but in the poorest countries, it is agriculture that employs the largest share of workers.

Akọwa Nkọwa

This is an "except" question, so the correct answer is the option that is not a reason for the failure of agricultural policies in West Africa.

The creation of agro-service stations is a positive, supportive measure designed to improve agricultural performance. Agro-service stations provide farmers with inputs (seeds, fertilisers), technical advice, equipment hire, and extension services. This is a constructive policy action that promotes agricultural development rather than causing policy failure.

The other three options are genuine reasons why agricultural policies have failed in West Africa:

• Vague policy statements lead to unclear objectives, making implementation difficult and outcomes hard to measure.
• Negation of policies occurs when successive governments abandon or reverse the agricultural policies of their predecessors, creating inconsistency and wasted investment.
• Provision of obsolete implements means farmers receive outdated or inefficient tools that do not improve productivity, undermining the very goals of the policy.

Since the creation of agro-service stations is a helpful intervention, it is the exception and does not belong among reasons for policy failure.