GMAT Sentence Correction (SC) | Re: Unlike traditional retailers that deploy one new product

d and media events, and stay ---deliver and stay should not be parallel. Stay ahead of the competition is the result ofdelivery.

'Stay' may not be a parallel action to deliver as has been made out. IMO, it is a parallel actionto respond in the modifier part. We should parse B as ----fast fashion clothing retailers deliver new looks every few weeks, enabling them (to respond
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