easy · GMAT Verbal

Which of the following, if true, most undermines the manufacturer's conclusion?

1. The manufacturer also ran a national television advertising campaign for the snacks during the month the shelf placement changed.
2. The profit margin on the organic snacks is lower than the profit margin on the manufacturer's non-organic products.
3. The increase in sales was even larger at stores that placed the snacks on a special end-of-aisle display rather than at eye-level.
4. Store managers reported that customers spent more time looking at the organic food section than they did in previous months.
5. Eye-level shelf space is generally more expensive for manufacturers to rent from grocery stores than lower shelf space.

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