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GMAT Question of the Day
January 7, 2014
Every weekday, GMAT Hacks publishes a realistic GMAT practice question. In general, you'll see Quant problems on Monday, Wednesday, and Friday, and Verbal questions on Tuesday and Thursday. You'll always be able to find them at www.gmathacks.com/daily.
Give today's question a try, and check your answer. When you're done, be sure to subscribe so that you can keep practicing every day!
Today's Practice GMAT Question:
Driving under the influence is a more severe problem among college students at rural and suburban universities than at urban universities. Social scientists wanted to determine how much of the problem is due to the distance students must drive to obtain alcohol. They looked at police records for incidents involving students at a number of universities, and compared those with the mean distances between student housing and bars and liquor stores. The longer the distances, the more likely students were to be arrested or involved in accidents. Which of the following, if true, would it be most important to take into account in evaluating the result? 

(A)  Many college students do not purchase alcohol at bars or liquor stores. 
(B)  Students at rural, suburban, and urban universities are arrested for driving under the influence more frequently than are nonstudent members of their communities. 
(C)  The average enrollment at urban universities is greater than that at rural and suburban universities. 
(D)  Local sheriff's departments near rural and suburban universities devote more resources to identifying and arresting those driving under the influence than do urban police forces. 
(E)  The number of bars and liquor stores per square mile is nearly five times as high in urban areas as it is in rural and suburban areas. 
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Need more work in this area? In Total GMAT Verbal, there is an entire chapter, including practice problems, that covers Evidence questions.
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About the author: Jeff Sackmann has written many GMAT preparation books, including the popular Total GMAT Math, Total GMAT Verbal, and GMAT 111. He has also created explanations for problems in The Official Guide, as well as 1,800 practice GMAT math questions.
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