Question

Rapid climate change along with the stress of adapting to changing water and food supplies were a major factor in the evolving size and complexity of the human brain

Answer 1

True.

Step-by-step explanation:

In remote times, human beings lived lives very different from the ones we live today and, consequently, their body and brain was different from ours, but it was being modified, through evolution, until it reached the biotype we know today.

An essential point of this evolution was the environment that the earth offered the human species and all the changes that this environment underwent. As well as, stressful life and deprivation, often of food and other elements.