Concept:The Benin Kingdom groups its people into three age grades for social roles and community service.
Explanation:The three age grades are Irogbae, Ighele, and Edion.
Irogbae represents children from birth up to about 16 years.
Ighele, also written Igbhele, consists of unmarried young men who serve as warriors.
Edion is made up of elders who have gained status in the society.
Thus the option that correctly names the three grades is Irogbae, Edion, Igbhele.
Answer:Option A: Irogbae, Edion, Igbhele.