Only one side of the moon is visible from Earth because...
A. the moon does not rotate on its axis.
B. the moon does not revolve around Earth.
C. the moon rotates faster than it revolves.
D. the moon revolves once and rotates once in the same period of time.
I chose D. Is that correct?
2 answers
You are correct.
Yes, the answer is D. Most moons of the solar system are "tidally locked" by nonspherical bulges so that the moon keeps one side facing the planet that they orbit.