Concept:Ali ibn Abi Talib was the first child or young person to accept Islam.Explanation:When Prophet Muhammad first received revelation, he invited his close family to Islam.Ali, who was about ten years old at that time, immediately believed in the Prophet’s message.He declared his faith even before other companions such as Umar or Uthman accepted Islam.The young age of Ali makes him the first young person to embrace Islam.Answer:C. Ali Bn Abi Talib