Question

why does the same part of the moon always face earth?
a the moon rotates at the same speed at which it orbits earth.
b the moon rotates at the same speed at which earth rotates.
c the moon rotates and revolves at the same speed at which earth rotates and revolves.
d the moon rotates at the same speed at which earth revolves around the sun.

Explanation:

The moon is in a phenomenon called synchronous rotation. It rotates on its axis in the same amount of time it takes to orbit Earth, which is why the same side always faces Earth.

Answer:

A. The moon rotates at the same speed at which it orbits Earth.