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.

Question

Quizplus · Accepted Answer

The evidence suggests that Mars may have had an ocean in the past, between 1-3 billion years ago, but there is no evidence to suggest that there is currently an ocean on Mars. Option A is incorrect because as per the given information, there is no evidence to suggest that there is currently an ocean on Mars. Option B is incorrect because there is no evidence to support the idea that the ocean is hidden in vast caverns beneath the surface of the planet. Option D is also incorrect because there is no evidence to suggest that the ocean existed until very recently.

Based on Evidence That Supports the Hypothesis Regarding an Ocean