The Organization of Petroleum Exporting Countries (OPEC) is an example of a? By: Sunday|Published on: May 25|Categories: Economics WAEC| 0 comments A. perfect competition B. monopsony C. duopoly D. cartel Correct Answer: Option D D. cartel Users Also Read These:The headquarter of the Organization Of Petroleum…The organisation of petroleum exporting countries…Which of the following roles is being played by the…Which of the following is not an objective of the…The main problem of the Organization of Petroleum…SEE ALSO Use the diagram above to answer this question. Identity the three Important factors that can make So to become either S1 or S2