Answer: The best answer is C
Step-by-step explanation:
C. In towns with healthy central shopping districts, what proportion of the stores in those districts suffer bankruptcy during a typical five-year period?
Supposing that roughly a quarter of stores in a HEALTHY central shopping district is being found out to have suffered bankruptcy during a typical five-year period. This would be an evidence to say that losing a quarter of the stores to bankruptcy is NOT a sign that a shopping district is "unhealthy". In that regards, the records from the other towns would simply show that, DESPITE having a SaveAll, the shopping districts maintained healthy bankruptcy rates.
So, the fact that a quarter of stores in Morganville's central shopping district will likely experience bankruptcy is no cause for alarm. This is what we would expect in ANY healthy central shopping district. Therefore, based on the evidence, there is no reason to expect that opening a Save All will negatively affect the health of the central shopping district.