It is believed that there was a heavy bombardment of planetesimals at what stage in planetary development?
A) cratering
B) flooding
C) slow surface evolution
D) plate tectonics
E) differentiation

Question

Quizplus · Accepted Answer

The heavy bombardment of planetesimals is associated with the cratering stage in planetary development, where numerous impacts created craters on the surfaces of planets and moons.

It Is Believed That There Was a Heavy Bombardment of Planetesimals