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:The Organization of Petroleum Exporting Countries…The Organization of Petroleum Exporting Countries…A major achievement of the Organization of Petroleum…The main role of the Organization of Petroleum…The organisation of petroleum exporting countries…