Concept:The management and maintenance of Nigeria’s harbours, docks, and inland waterways are entrusted to a specific public corporation created by law.
Explanation:The Nigerian Ports Authority (NPA) is the public corporation responsible for these facilities.
It was established in 1955 to provide and regulate port facilities.
Its duties include ensuring safe water traffic movement, controlling pollution in rivers and ports, and maintaining the country’s harbours and docks.
The Nigerian Police Authority deals with law enforcement, not port management, so it is incorrect.
Similarly, the National Ports Authority and National Police Authority are not the correct official names in Nigeria.
The correct body is therefore the Nigerian Ports Authority, commonly known as NPA.
Answer:B. Nigerian Ports Authority