The statement that accurately compares the social structures of Egypt and Mesopotamia is:
"Priests and priestess were closer to the pharaoh in ancient Egypt."
In ancient Egypt, priests and priestesses held significant power and influence, often serving directly under the pharaoh and being central to the religious practices and governance. In contrast, while priests were also important in Mesopotamia, the hierarchical structure and the relationship between religious leaders and the rulers differed between the two cultures.