The Organization of Petroleum Exporting Countries (OPEC) is an example of a? by Sunday | May 25 | Economics WAEC | 0 comments A. perfect competition B. monopsony C. duopoly D. cartel Correct Answer: Option D D. cartel Users Also Read These:A major achievement of the Organization of Petroleum…The headquarter of the Organization of Petroleum…The main problem of the Organization of Petroleum…One objective of the organisation of petroleum…Nigeria joined the Organisation of Petroleum…