The Reduction or Loss of Cranial Crests in Hominin Species

The reduction or loss of cranial crests in hominin species represents __________

A) the need for greater room for muscles associated with chewing
B) the de-emphasis on protection for the cranial case
C) a de-emphasis on chewing as well as a greater emphasis on brain size expansion.
D) a reduction in the size of neck muscles associated with quadrupedalism