The mountains on the Moon were mostly caused by:

Question

Quizplus · Accepted Answer

The mountains on the Moon were primarily formed as a result of impacts from meteoroids. When these objects from space hit the Moon, the force of the impact created craters and often threw up material around the edges, forming mountainous regions. Unlike Earth, the Moon does not have active plate tectonics or a significant atmosphere, so its mountains are not formed by these processes but rather by the aftermath of cosmic collisions.

The Mountains on the Moon Were Mostly Caused By