Bunuel wrote:
The judges were swift in deciding
whether or not to disqualify the swimmer that won.
A. whether or not to disqualify the swimmer that won
B. if they should disqualify the winning swimmer or not
C. whether to disqualify the swimmer that won or not
D. whether to disqualify the winning swimmer
E. whether to disqualify the swimmer that won
OFFICIAL EXPLANATION
The judges were swift in deciding whether or not to disqualify the swimmer that won.A. whether or not to disqualify the swimmer that won
While this answer choice is grammatically correct, it is stylistically flawed. Using or not after whether is redundant.
It is true that stylistic mistakes are not always corrected. However, since there is another grammatically correct answer choice that is also more concise than this one, it is preferable. Look for it!B. if they should disqualify the winning swimmer or not
If is used in the GMAT in Conditionals only. Since in this question there is no condition, if should be replaced with whether.C. whether to disqualify the swimmer that won or not
While this answer choice is grammatically correct, it is stylistically flawed. Using both whether and or not is redundant.
It is true that stylistic mistakes are not always corrected. However, since there is another grammatically correct answer choice that is also more concise than this one, it is preferable. Look for it!D. whether to disqualify the winning swimmer
This answer choice corrects the redundancy of the original sentence by omitting or not and stylistically improves the sentence further by replacing the three-word phrase swimmer that won with the two-word phrase winning swimmer.E. whether to disqualify the swimmer that won
This answer choice is grammatically correct. Moreover, it corrects the redundancy of the original sentence by omitting the words or not. Nevertheless, it is not the most concise of the five answer choices. There's another grammatically correct answer choice that also corrects the original mistake and that's even more concise than this answer choice is. Try to find it!