Primates have been able to inhabit much of the earth due to their ability to

All have binocular vision with fields of view that significantly overlap, resulting in true three dimensional (3-D) depth perception or stereoscopic vision. ... Depth perception is an invaluable tool for animals that need to move quickly. It allows them to judge the distances to important objects in their environment.

Explanation:

don't guess, because if you answer incorrectly, points are taken off. even if you don't finish, take your time. to study, use the sample questions. there is not much preparation to take the pre- tests.