Official: Six months ago, the fines for parking violations on the city's streets were raised to help pay for the parking garage that had just opened. Since then, parking violations on our streets have dropped by 50 percent. Hence, if we want there to be even fewer parking violations, the fines should be raised again.
The reasoning in the official's argument is flawed in that the argumentThe official assumes that the higher fines caused the drop in parking violations. But the fine increase happened at the same time a new parking garage opened.
The drop may have occurred because drivers had more legal parking available, not because the fines were higher.
(A) takes a possible effect of a reduction to be a possible cause of that reduction
This is not the flaw. The argument does not confuse cause and effect in that way.
(B) takes for granted that raising fines a second time will reduce parking violations at least as much as it did the first time
This is too specific. The official does not need to assume another 50 percent drop. The bigger problem is that the first drop may not have been caused by the fines at all.
(C) fails to take into account the financial benefits the city is now deriving from fines for parking violations
This is irrelevant. The conclusion is about reducing violations, not maximizing fine revenue.
(D) takes for granted that people who park their cars illegally would prefer to park legally
This is not the main flaw. The issue is not drivers’ preferences, but whether the cause of the decrease was the fine increase or the new parking garage.
(E) fails to establish that the initial decrease in parking violations was not due to the availability of additional parking spaces
This is correct. The new parking garage may have provided more legal parking, causing fewer street violations. If so, raising fines again may not reduce violations further. That alternative explanation weakens the official’s
causal claim.
Answer: (E)