One of the tertiary services in an urban centre is?

One of the tertiary services in an urban centre is petrol retailing. Tertiary services refer to services that involve the provision of expertise and specialized knowledge to individuals and businesses. Petrol retailing, also known as gasoline or fuel retailing, is a service that involves the sale and distribution of gasoline or other fuels to motorists, businesses, and other consumers. This service is essential in an urban centre, where there are numerous vehicles on the road and demand for fuel is high. Petrol stations can also provide other related services, such as car washes, convenience stores, and repair shops, making them important for the functioning of an urban centre.