Correct Answer: (d) Guyana
Solution:Gabon is a country located on the West coast of Central Africa. It is located on the Equator. Its capital and largest city is Libreville, Guinea is a west coastal country in West Africa. Conakry is its largest city and also its capital, It is the world's 2nd largest producer of bauxite and has rich deposits of diamonds and gold. Guinea-Bissau is a country in West Africa: Bissau is its capital city. Guyana officially the Co- operative Republic of Guyana is a country in the northern mainland of South America. Guyana is the only South American nation in which English is the official language.