I need the possibility in order to answer
Answer:
The ancient Egyptian royal families were almost expected to marry within the family, as inbreeding was present in virtually every dynasty. ... It is believed that the pharaohs did this because of the ancient belief that the god Osiris married his sister Isis to keep their bloodline pure.
The first Pharaoh of Egypt was Narmer, who is also referred to as Menes. so the answer is a.
