The Moon is thought to have formed ________.
A. from material that coalesced after an impact between Earth and a Mars-sized object
B. after the impact of two comets somewhere between Earth and Venus
C. from material ejected during the t-tauri phase of the Sun's early history
D. after the impact of two protoplanets somewhere between Earth and Mars
E. when an early massive supervolcano ejected materials into orbit around Earth
Answer: A
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