The Organization of Petroleum Exporting Countries (OPEC) is a? by Sunday | May 28 | Economics WAEC | 0 comments A. cartel B. duopoly C. monopoly D. monopsony Correct Answer: Option A A. cartel Users Also Read These:The headquarter of the Organization of Petroleum…One objective of the organisation of petroleum…The main problem of the Organization of Petroleum…The Organization of Petroleum Exporting Countries…The Organization of Petroleum Exporting Countries…