Earth is the only terrestrial planet with a large, spherical Moon. Many theories have been proposed to explain this somewhat unusual Earth-Moon system. Which of the following are NOT theories proposed to explain the Moon's formation?
spin-off

the following five theories propose to explain the moon formation;

1.Capture

2.Fission

3.Conformation

4.Colliding planetesimals

5.Giant impact

Explanation:

Capture: some researchers suggest that the moon originally formed elsewhere before being grabbed by the earth gravitational pull.

Fission: this thought is from Charles Darwin's son George, he explain that the material that formed the moon was ejected into space by a molten, fast spinning earth in the early days of the solar system.

Co-formation: It was also possible that the moon formed alongside Earth 4.5 billion years ago, coalescing from dust and gas in the same part of our solar system's protoplanetary disk.

the answer is b

explanation: