Concept:ECOWAS is a regional economic union of West African countries.Explanation:The correct answer is the country that is not part of West Africa.Côte d'Ivoire, Burkina Faso, and Senegal are all West African countries and founding members of ECOWAS.Cameroon is located in Central Africa, so it is not a member of ECOWAS.ECOWAS has 15 member states, and Cameroon is not among them.Answer:B. Cameroun