The rotational period of the moon is a) greater than the revolution period around earth b) less than the revolution period around earth c) equal to the revolution period around earth d) always changing

The rotational period of the moon is A) greater than the revolution period around Earth.

The moon's rotational period otherwise known as the lunar period around the earth is approximately 27.32 days. This period is measured in reference to a fixed star, and it is also a period the moon takes to complete an orbit around the earth.  

The moon's rotational period between the periods of the new moon, that is, from new moon to new moon, occurs in 29.5 days which is some days longer than the revolution period around the earth. This period changes throughout the year but on average it takes 29.5-29.53 days.