Critical Reasoning (CR) | Re: A plausible explanation of the disappearance of the

I am not able to eliminate option E

If consequences are not well understood, we cannot conclude anything about the impact of the collision on animals (I understand, it's irrelevant for vegetation), thus weakening the conclusion, right?

(I understand why B is right - so no issues there.)

E) The consequences for the vegetation and animals of comet colliding with Earth are not fully understood.

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