While all of the following may have been critical to the development of an expanding brain; which of the following would have contributed most directly to brain growth?

Question

Quizplus · Accepted Answer

A genetic mutation resulting in a smaller jawbone and smaller facial muscles would have directly contributed to brain growth by allowing more space for the brain to expand, as less energy and resources were needed for the development of the jaw and muscles.

While All of the Following May Have Been Critical to the Development