GMAT Sentence Correction (SC) | Re: Much like the belief that the world is flat, challenged by

Had marked D first then realized that E is the answer.

Spent some time on it and figured out the reason why. Very tricky.


A) are currently widely-accepted hypothesis about the planet that are about to be put into question as quantum physics are developingrapidly
hypothesis, physics singular, verb usage 'are'. incorrect.
B) is currently a widely-accepted hypothesis about the planet that is about to be put into question as quantum physics are developing rapidly
physics singular, verb usage 'are'. incorrect.
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