Multiple Choice
Based on evidence that supports the hypothesis regarding an ocean on Mars, which of the following statements is TRUE?
A) Mars has an ocean today.
B) Mars has an ocean, and it is probably hidden in vast caverns beneath the surface of the planet.
C) Mars may have had an ocean in ancient times, perhaps 1-3 billion years ago.
D) Mars may have had an ocean until very recently.
Correct Answer:

Verified
Correct Answer:
Verified
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