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 five countries that established the Organization…The organisation of petroleum exporting countries…Nigeria joined the Organisation of Petroleum…The main role of the Organization of Petroleum…Nigeria is rated in the Organization of Petroleum…