Which of the following countries is NOT part of Central America?

Jamaica is the correct answer because it is an island nation located in the Caribbean Sea, which is geographically separate from Central America. Central America consists of seven countries situated on the isthmus connecting North and South America and includes Costa Rica, Panama, and Guatemala, among others. Jamaica, being an island, does not share the land border or geographical characteristics of Central American countries, which typically are on the mainland and connected to each other. This distinction is what makes Jamaica the country that does not belong to the Central American region.