Despite the planet's close proximity to the Sun,water ice remains on the surface of Mercury because it
A) is permanently shielded from the Sun by crater walls at the north and south poles.
B) exists as permafrost below the thermally insulating surface,being exposed only by occasional impacts.
C) is continuously replenished by fresh impacts from comets.
D) is continuously replenished by condensation of water vapor from volcanoes.

Question

Quizplus · Accepted Answer

Water ice remains on the surface of Mercury in areas that are permanently shadowed within craters at the north and south poles, where sunlight never reaches.

Despite the Planet's Close Proximity to the Sun,water Ice Remains