GMAT Sentence Correction (SC) | Re: QOTD: The list of animals

Choice D:

The list is singular and hence needs a singular verb - has been expanded

that refers to the preceding noun - animals - plural and hence we need a plural - exhibit -

Idiomatic usage - either X or Y - X and Y to be parallel


The list of animals that exhibits a preference of either using the right or the left hand (i.e. claw, paw, or foot) has been expanded to include the lower vertebrates.

a.exhibits a preference of witherusing the right orthe left hand (i.e. claw, paw, or foot)
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