Concept:In the Benin Kingdom, special titles are given to members of the royal family, including the king's mother.Explanation:The king of Benin is called the Oba.His mother holds a distinct and highly respected title within the royal court.This title is Iyoba.The Iyoba is not just a family name but an official political and ceremonial position.Among the options given, Iyoba correctly names the king's mother in the Benin Kingdom.Answer:Option B: Iyoba.