Multiple choice question.

The distance between the earth and the moon is minimum when the moon is in :

B is correct, as the farthest point on the elliptical trajectory of the moon is called the Perigee.

A is incorrect. Aphelion refers to the point on the trajectory of earth’s revolution, when it is farthest to the sun.

C is incorrect. Perihelion refers to the point on Earth’s trajectory, which is closest to the sun.

D is incorrect. It refers to the point on moon’s revolution trajectory, which is farthest from the earth.