GMAT Critical Reasoning (CR) | Re: Tourists have long complained that hotel accommodations in

C is correct. Here's the breakdown:

A. The tourists who stayed in Midville hotels last year were aware that the hotel tax rate had been lowered. --> irrelevant

B. The average price of hotel accommodations in Midville was not significantly higher than in hotels in other cities either last year or the year before. --> irrelevant

C. The average length of a tourist's stay in Midville hotels was not longer last year than it had been the year before. --> Correct; only thing we have to go
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