When were the Moon's highlands formed?
A) During the early heavy bombardment era (around 4.5 billion years ago)
B) During the final epoch of heavy bombardment (around 4.0-3.8 billion years ago)
C) During the time of the dinosaur extinction (around 250 million years ago)
D) None of these

Question

Quizplus · Accepted Answer

The Moon's highlands were formed during the early heavy bombardment era, around 4.5 billion years ago, when the Moon was still forming and cooling.

When Were the Moon's Highlands Formed