Which of the following is not a function of the Nigerian Ports Authority?

The Nigerian Ports Authority is responsible for the management of ports in Nigeria. It has various functions aimed at ensuring the smooth operation of the ports. One of the options listed is not a function of the Nigerian Ports Authority, and that option is "Checking smuggling activities." While the Nigerian Ports Authority has a responsibility to ensure that illegal activities do not take place within the port, its primary function is not to check smuggling activities. This is usually the responsibility of law enforcement agencies such as the Nigeria Customs Service and the Nigerian Police Force.