We can always see only one side of the moon because

Options

A. 1.of the revolution of the earth
B. 2.of the rotation of the earth
C. 3.it is a stationary satellite of the earth
D. 4.it takes equal times to rotate round its axis and to revolve round the earth

Answer

B

Explanation

We can always see only one side of the moon because the moon rotates on its axis once in `27 1/3` days and it also takes the same time to revolve around the earth.