Concept:Nigeria’s foreign policy is shaped by its economic strength as a major exporter of natural resources, especially crude oil.Explanation:Nigeria earns most of its foreign exchange from the export of natural resources, particularly petroleum.This economic dependence influences its foreign relations and diplomatic decisions.As a leading oil producer, Nigeria uses its resource wealth to gain political influence in Africa and global affairs.Thus, being a major exporter of natural resources is a key factor in its foreign policy.Answer:B. natural resources