The process of biological evolution often allows humans to survive consistent environmental stresses that occur across multiple generations. as humans colonized earth's diverse environments, they encountered hot, dry areas and decided to settle. what trait likely offered an advantage in this environment?

a) the ability to squint eyes to block out bright light
b) the ability to dig deep holes to find groundwater
c) the ability to shiver to create body heat
d) the ability to produce sweat to cool their bodies