One of the functions of Public Corporation is to

1. Analyze the question The question asks for a function of a public corporation. A public corporation (also called a parastatal) is a body set up by government, usually through an Act of the National Assembly or a decree, to run a business or provide a service for the public.

2. Explain the concept Public corporations in Nigeria include NNPC, NEPA (now the Power Holding companies/TCN), NPA (Nigerian Ports Authority), NITEL, and the Nigerian Railway Corporation. They exist mainly to:

• Provide essential services such as electricity, water, transport and telecommunications.
• Provide goods and services that private firms may find unprofitable or too costly.
• Generate revenue for the government.
• Create employment.
• Develop the economy and key strategic sectors.

3. Check each option

• A. Entertain public complaints: This is the job of the Public Complaints Commission (an ombudsman body), not of public corporations in general.
• B. Promote equality: This is a broad goal of government and the constitution, not a specific function of public corporations.
• C. Prevent exploitation: Public corporations may help check private monopolies, but this is not their main stated function. Regulatory agencies and consumer protection bodies do this work.
• D. Provide essential service: This is the primary reason public corporations are established. Examples are electricity supply, ports, and rail transport.

4. Answer The correct option is D. provide essential service.

5. Exam tip When you see "public corporation" in a question, think services and utilities (power, water, transport, communication). If an option talks about complaints, think Public Complaints Commission, and if it talks about equality or rights, think the Constitution or the courts.