Which of the following countries is an OPEC member?

Explanation

OPEC (Organization of the Petroleum Exporting Countries) is an intergovernmental organization made up of countries whose respective economies are all significantly dependent on oil export. The stated main goal of OPEC is to ensure stable and reasonable oil prices. OPEC was founded in 1960 at a conference in Baghdad by Iran, Iraq, Kuwait, Saudi Arabia and Venezuela. Since then, others countries have joined.