Concept:The Nigeria Ports Authority manages seaports and provides infrastructure for handling cargo.Explanation:The authority is responsible for providing port facilities that make the loading and offloading of cargo quick and efficient.These facilities help prevent congestion at the seaports and create space for incoming vessels.Providing carrier services, ensuring goods reach final destinations, or shelter for cargo operators are not its primary port functions.Therefore, the correct function is the provision of facilities for speedy cargo handling.Answer:B. facilities to enhance the speedy loading and offloading of cargoes.