How do scientists think the moon was formed and what evidence do they have for this theory?

It has been described that the Moon formed as a result of a confrontation between the Earth and another small planet the size of Mars. The wreckage from this impact managed to accumulate in an orbit around Earth, eventually forming the Moon.

Explanation:

answer; i believe the correct answer is (4) flip a coin as each participant arrives,heads indicates assignment to the first group: tails indicates assignment to the second group;