Concept:Nigeria’s active involvement in UN affairs in the 1970s improved its international standing and led to UN recognition through an elective position.Explanation:Nigeria played a prominent role in UN peacekeeping and in the fight against apartheid in the 1970s.This contribution earned Nigeria a two-year term as a non-permanent member of the United Nations Security Council.The position was not a permanent seat, nor did it make Nigeria the chairman of the General Assembly.Therefore, the most correct description of what Nigeria earned is a non-permanent membership position.Answer:A. non-permanent membership position