Service which are of absolute monopoly can can best be proved by

Services which are of absolute monopoly can best be proved by public enterprises. A public enterprise is a government-owned or controlled entity that provides goods and services to the public. They can be considered as monopolies because they have exclusive control over the production and distribution of certain goods or services. Public enterprises are typically created to provide essential goods and services that are considered too important to be left to the market forces alone. Examples of public enterprises include public utilities such as electricity, gas, and water supply companies, as well as public transport companies. These services are often considered natural monopolies because they require significant infrastructure and resources, and it is not feasible for multiple companies to compete effectively in the same market. In a private company or a limited liability company, ownership and control of the company rest with the shareholders, and the company operates in a competitive market. A public company is similar to a private company, but its shares are publicly traded, which means that anyone can buy and sell shares in the company. While public and private companies can also operate in markets with monopolistic features, they are not necessarily absolute monopolies like public enterprises.