Mutually Assured Correction

X-rated problem solving
November 30, 2014
GMAT question of the day, sentence correction
What’s the antecedent of Mexico and the U.S.? Laurasia? – GMAT Sentence Correction
December 3, 2014
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Mutually Assured Correction

A - Correct: This option correctly uses the parallel past simple tense defined in accordance with the other verbs determined and waged.

B - Incorrect: This option does not follow the parallel structure by using the active participle defining while the other verbs are in the past tense.

C, D, E - Incorrect: These options omit words and change the sequence of words, which consequently changes the original meaning of the sentence.

A is the correct answer.