As the moon revolves around the Earth, it also rotates on its axis. Why is it that the the same side of the moon is always visible from Earth?

a.The moon does not have a day and night cycle.

b. That side of the moon only faces away from Earth during the daytime.

c.The speed of the moon's rotation keeps the same side always facing Earth.

d. The Earth's gravity attracts one side of the moon more than the other.