Question

Why do we see evidence of impact craters on terrestrial objects, but not on outer planets?

a
Terrestrial objects have solid surfaces while outer planets do not
b
Outer planets have solid surfaces while terrestrial objects do not
c
Terrestrial objects have a stronger gravitational pull
d
Outer planets have a stronger gravitational pull

Answer 1

The answer should be A because the outer planets are just gas, therefore stuff would fall through it.