Concept:The Commission on Mediation, Conciliation and Arbitration is a dispute-resolution organ established under the African Union.
Explanation:This commission was originally created by the Organisation of African Unity (OAU) and later retained by the African Union (AU).
Its main purpose is to resolve conflicts peacefully among African member states.
It uses mediation, conciliation, and arbitration as tools to settle disputes.
This organ is not affiliated with the United Nations, the Commonwealth, or OPEC.
It works specifically within the AU peace and security framework.
Its role helps to maintain stability and prevent war across the African continent.
Answer:D. African Union