Though once powerful political forces, labor unions have lost much of

Though once powerful political forces, labor unions have lost much of their influence, which has resulted in a political climate that some analysts claim to favor management.

A) which has resulted in a political climate that some analysts claim to favor
B) resulting in a political climate that some analysts claim favors
C) which has resulted in a political climate that some analysts claim that favors
D) resulting in a political climate that some analysts claim to be in favor of
E) which has resulted in a political climate that has been claimed by some analysts to favour

MANHATTAN GMAT OFFICIAL EXPLANATION:

The original sentence contains several errors. First, the relative pronoun "which" cannot be used to modify the action of the preceding clause, as it does here ("which has resulted in..."). Instead, it must be used to modify the immediately preceding noun only. In this case, that noun is "influence," which cannot be described as resulting in a "political climate." It is the loss of that influence that has resulted in the "political climate" described in the sentence, not the influence itself. Second, "that some analysts claim to favor management" is incorrect. If we remove "some analysts claim" from the sentence, we are left with "a political climate that...to favor management." This is incorrect. We need "to favor" to agree with "a political climate that."

(A) This choice is incorrect as it repeats the original sentence.

(B) CORRECT. This choice corrects the relative pronoun error by replacing "which has resulted" with "resulting." Moreover, "favors" agrees with "a political climate that..."

(C) This choice does not correct the relative pronoun error. Moreover, it does not correct the verb error. It replaces "to favor" with "that favors," creating the illogical sequence "a political climate that...that favors."

(D) This choice corrects the relative pronoun error by replacing "which has resulted" with "resulting." However, it does not correct the verb error. It replaces "to favor" with "to be in favor of," creating the illogical sequence "a political climate that...to be in favor of."

(E) This choice does not correct the relative pronoun error. Moreover, it does not correct the verb error. It does not replace "to favor." Additionally, "has been claimed by some analysts" is unnecessarily in passive voice and is wordy.