by TiffanyB Sat Sep 18, 2021 12:48 pm
Hello jbhB682,
You have presented a solid analysis. Your goal on any SC problem is not to identify the correct answer, but rather to eliminate answer choices until you only have one remaining. This may sound like a minor difference, but it's sometimes difficult to choose the correct answer. Particularly when only two answer choices remain, it's often easier to compare and see which is better.
In this case, you identify a couple of important issues.
1. The sentence structure created by opening with "While." While is technically a conjunction and we would expect the sentence structure to be "While X, Y." X and Y should be independent clauses and are most likely opposing - or at least somewhat conflicting - ideas. For example, "While I enjoy vacationing, I haven't been on vacation in years because I haven't been able to take time off work."
Structure: While [X], [Y] --> While [I enjoy], [I haven't].
We see this structure in A: While...[property values can hurt...investors], [they are...devastating for homeowners]. However, this structure is not seen in C, which is problematic.
2. Pronouns.
While it may not be a "rule" that pronouns of the same class must have the same referent, they almost always will have the same referent. So frequently, in fact, that you might want to simply consider this to be a rule.
This is true because when assessing pronouns, you're most commonly looking for issues with agreement and clarity. Issues with agreement arise when pronouns don't match their referents in number (e.g., Five ducks swam in the pond and then went to its nest). Issues with clarity arise when you're not certain which noun (referent) a pronoun is or should be referring to.
In answer choice C, there are several plural nouns to which "their" could be referring. This is not ideal because it hinders the clarity of the sentence.
Finally, "property values" functions grammatically as a subject and "they" functions as a subject. If "their" refers to homeowners, it would be ideal if "homeowners" was grammatically parallel to "their," as well. However, that is not the case: "homeowners" functions as the object of a preposition and "their" functions as as subject. This grammatical parallelism gives us more reason to believe that "their" refers to property values, although logically that makes little sense.
Ultimately, A is simply a better choice than C.
Tiffany Berkebile
Manhattan Prep GMAT Instructor