In general, a heavily cratered surface should imply a solid interior. Lack of a planet-wide magnetic field should also imply a solid interior. Which one of the following bodies actually possesses both a heavily cratered surface and no planet-wide magnetic field?
A)Mercury
B)Venus
C)the Moon
D)Mars

Question

Quizplus · Accepted Answer

The Moon has a heavily cratered surface and no planet-wide magnetic field. Mercury also has a heavily cratered surface, but it does have a weak magnetic field, whereas Mars has a weak magnetic field and less heavily cratered surface. Venus, on the other hand, has a smoother surface with very few visible impact craters, and it has no planet-wide magnetic field, but its interior is not thought to be solid due to its high surface temperatures and atmospheric pressure.

In General, a Heavily Cratered Surface Should Imply a Solid