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If the Giant Impact Hypothesis is true, what may be inferred about the Moon?
When two solid objects collide, pieces break off, creating a new, smaller bodies. We can infer, therefore, that the Moon was a chunk that broke off from the Earth during the collision.
The Giant Impact Hypothesis states that the Moon was created after the Earth and another planetary body collided. Therefore, the Moon cannot be older than that Earth.
The passage states that a body roughly the size of Mars collided with Earth to create the Moon. We cannot infer that the result, the Moon, is the same size.
Although we know that the Moon is smaller than Earth and Mars, this information is not implied by the passage.
This answer choice corresponds to the first hypothesis mentioned in the passage, not the Giant Impact Hypothesis.