Concept: The Nigerian Enterprises Promotion Decree, also called the Indigenization Decree, aimed to transfer ownership of certain businesses to Nigerian citizens.Explanation:The first Nigerian Enterprises Promotion Decree was promulgated in 1972.It was introduced by the military government under General Yakubu Gowon.The decree was meant to increase indigenous participation and control in the economy.A later decree was issued in 1977, but the first one remains that of 1972.Therefore, the correct option is 1972.Answer: A. 1972