The amount of the
lighted side of the moon you can see is the same during first quarter
and third quarter phase. The answer is letter C. The moon surface is visible to an observer on earth due to the
gravitational force that attracts the moon to the earth. The more massive the
body is, the more the smaller body is attracted to the larger body. We can only
see the side of the moon due to the speed at which the moon rotates.
