On its icy surface,Uranus's satellite Ariel has smooth valleys with few craters,as well as rough areas with many craters.Based on this,what can be concluded?
A)The valleys are young and the rough areas are old.
B)The valleys are old and the rough areas are young.
C)Both valleys and rough areas are young.
D)Both valleys and rough areas are old.

Question

Quizplus · Accepted Answer

The smooth valleys with few craters suggest they are younger surfaces, as they have experienced less impact over time. The rough areas with many craters indicate they are older, having accumulated more impacts.

On Its Icy Surface,Uranus's Satellite Ariel Has Smooth Valleys with Few