Assumption or Strengthen Question? Why is D not correct?

Hi Rastis,

This CR prompt is based on a PLAN, so we need to understand the plan and choose an answer that makes the plan more likely to succeed.

The Facts:
-Sales at a local sandwich shop have been declining
-A health food restaurant opened on the same block 3 months ago.

Intermediate Conclusion:
-The health food restaurant is responsible for the decline in business at the sandwich shop.

The Plan:
-The best way to RAISE SALES BACK TO THEIR PRIOR LEVELS is to offer special sandwich PRICES that COMPETE with the low prices at the health food restaurant.

The Logic:
The owner is clearly focused on PRICE, but the plan is to reprice his sandwiches to "compete" with prices at the health food store. To RAISE his sales, the owner thinks that diners will come back to his sandwich shop (or perhaps buy more per capita). If the prices are essentially the same at both shops, then WHY would a buyer come back to the sandwich shop? There must be some other reason that would affect their decision-making processes. That reason will be the correct answer.

Answer A is the only one that provides an explanation for why diners would come back to the sandwich shop. If the prices are equivalent, then this reason will get diners to come back.

GMAT assassins aren't born, they're made,
Rich