Answer:
A. The speed of the Moon's rotation keeps the same side always facing Earth.
Step-by-step explanation:
Earth has one natural satellite - the moon. The same side of moon is always visible from the Earth because period of rotation around its axis and revolution around the earth are almost same. Moon rotates about its axis and around the earth in about 28 days. The speed of the Moon's rotation keeps the same side towards the Earth.
Thus, correct option is A.