Among the Possible Reasons for the Rapid Growth of Hominid

Among the possible reasons for the rapid growth of hominid brains is the fact that

A) hominids enjoyed rich supplies of protein from meat,eggs,and seafood.
B) the development of agriculture led to more stable food supplies.
C) urbanization,or the development of cities,favored brains capable of more complex thinking.
D) the development of literacy stimulated considerable brain growth.