According to the giant impact hypothesis, how did the Moon form?
a. A large iron asteroid collided with the rocky Earth during the late heavy bombardment. The asteroid carried material away from the Earth which accreted onto the asteroid and formed the Moon.
b. The Moon was an asteroid that was captured by the Earth.
c. A Mars‑sized object smashed into the molten proto‑Earth, resulting in a larger Earth and debris that coalesced to form the Moon.
d. A jovian planet was struck by a large asteroid and split into two smaller bodies, which became the Earth and the Moon.
