A Person Weighs Less at the Equator Than at the Poles

Multiple Choice

A person weighs less at the equator than at the poles. The main reason for this has to do with

A) the law of action and reaction.
B) the influence of the sun, moon, and all the planets.
C) the spin of the Earth.
D) the shape of the Earth.
E) both the spin of the Earth and the shape of the Earth.