Answer:
A contingency plan
Explanation:
A contingency plan is an alternative plan taken to prevent an event which could have severe consequences. It is usually taken, not as a plan A, but as a preventive measure for a bad event, which although not likely to happen, but could have spelling consequences at its occurrence.
Although, it is not certain Target will come to the town, the grocery store devised an alternative plan in case the event happens which could affect their business, hence, a contingency plan.
