(A) 1960
(B) 1965
(C) 1970
(D) 1975

The answer is: (A) 1960

OPEC is an Organization of the Petroleum Exporting Countries (OPEC). It refers to a group of 13 of the world’s major oil-exporting nations.  OPEC was founded in 1960 to coordinate the petroleum policies of its members and to provide member states with technical and economic aid.

Countries that belong to OPEC include Iran, Iraq, Kuwait, Saudi Arabia, and Venezuela (the five founders), plus Algeria, Angola, Congo, Equatorial Guinea, Gabon, Libya, Nigeria, and the United Arab Emirates.