Question

Scientists believe the scarps on Mercury formed as a result of which process?

A. plate tectonics
B. volcanic eruptions
C. bombardment by asteroids
D. shrinking of the planet as it cooled

Answer 1

Looks like the answer is B

But I am not sure, could be A, I know planets don't shrink when they are cold and unless the asteroid has mercury or mercury is on the planet already and the asteroid pierces it, it is not C.

Answer 2

it is d. hope this helps