Which of the following statements best explains why the surfaces of Callisto and most of Ganymede appear old?
A) They are very bright and heavily cratered.
B) They are dark and heavily cratered.
C) They have old icy regions.
D) They have rocky ring particles.

Question

Quizplus · Accepted Answer

The surfaces of Callisto and most of Ganymede appear old because they are dark and heavily cratered. The high number of craters indicates that the surfaces have not been significantly altered for a long time, suggesting their age.

Which of the Following Statements Best Explains Why the Surfaces