by tim Tue Oct 19, 2010 1:54 pm
Sorry, Gokul, the "that" is neither necessary nor unnecessary, and there is NO confusion either way. Think of a typical sentence as a single track. When you encounter parallelism, you are effectively splitting the sentence into parallel tracks. It is important to identify where the sentence split into parallel tracks, but depending on where you choose to split the sentence there may be multiple correct ways to write the sentence. In this case, we could split the sentence before the word "that", which would require a "that" in both parallel tracks. Or we could split the sentence after "that", allowing the "that" to apply to both parallel tracks. The important thing to keep in mind here is that you must not eliminate an answer choice just because the answer chooses to split into parallel tracks at a different point than you would choose to. As long as the option presented can be parallel under some valid interpretation, it does not violate parallelism..
In this case, the real reason you have to repeat "that" is because it’s not underlined. :) Very good lesson to keep in mind on the GMAT and life in general - don’t spend any time worrying about things you can’t change.. :)
Tim Sanders
Manhattan GMAT Instructor
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