Multiple Choice
In the early universe, when the Solar System had yet to be cleared of the debris out of which it formed, which type of object would have been most likely to deposit water onto Earth's surface?
A) comets
B) asteroids
C) a Mars-sized protoplanet
D) a rogue moon
E) none, because water is not a major component of any of the objects above
Correct Answer:

Verified
Correct Answer:
Verified
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