Skywalker18 wrote:
Minnesota is the only one of the contiguous forty-eight states that still has a sizable wolf population, and where this predator remains the archenemy of cattle and sheep.
(A) that still has a sizable wolf population, and where
(B) that still has a sizable wolf population, where - 'where' incorrectly refers to 'population'
(C) that still has a sizable population of wolves, and where - usage of comma+ AND is incorrect as the part that follows is not an independent clause
(D) where the population of wolves is still sizable; - the semicolon in (d) separates its meaning into two unrelated sentences; i.e., the part of (d) that follows the semicolon suggests that the wolf is still the archenemy of the sheep in general. this is almost exactly the opposite of the intended meaning, which is that Minnesota is the only state where that's still true!
(E) where there is still a sizable population of wolves and where - Correct
Answer E
1. I understand that 'that' correctly refers to 'the only one of the contiguous forty-eight states' which is Minnesota. So, there is no subject-verb agreement issue in options A-C.
2. usage of comma+ AND is incorrect in options A and C as the part that follows is not an independent clause. So, can we use this rule to eliminate?
I don't really believe that the presence of that comma is a reason to eliminate those choices. Commas can be used optionally to create pauses and indicate emphasis in sentences. So, the presence of that comma before "and" does not constitute a clear flaw.
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3. Is the parallelism in options A and C incorrect or are those options just inferior to option E? Can 'that' clause be parallel to 'where' clause?
The parallel structure in A and C is not clearly incorrect. To choose E over those two, you have to use the GMAT SC approach of just choosing the most parallel choice.
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4. Does 'this predator' need to refer to a noun? sizable wolf population-- wolf is an adjective
sizable population of wolves-- wolves is a noun and it is plural too, whereas 'this predator' is singular
I think "this predator" would ideally have the noun "wolf" to refer to. In the OA, (E), "this predator" almost seems to refer to the only preceding singular noun, "population."
Overall, the truth is that this question is not very good. You have to choose a not particularly well written OA on the basis of the presence a comma, which may nor may not be a flaw, and other vague differences between choices.
We can only hope that SC quality control keeps us from seeing a question as lame as this one when we take the test.