GRE Sample Test 5 Verbal Reasoning 1

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18
Question 18 is based on the passage below. Select one answer choice.
A recent study of airborne illnesses in Belorussia showed that regular subway riders had a 10 percent chance of contracting influenza, while regular bus riders had a 15 percent chance of contracting influenza. Clearly, if the government of Belorussia wants to decrease the influenza rate among its citizens, it should encourage bus riders to start using the subway.

Question : 18 of 20

Marks: +1, -0

Which of the following, if true, most weakens the argument?

Regular bus riders are, on average, older than regular subway riders, and susceptibility to disease has been linked to old age.
The costs of encouraging people to use the subway will put a strain on the government’s budget.
If more people begin using the subway, some bus drivers will be out of employment.
For most routes, buses are as fast as subways.
Many bus riders prefer buses because they let the riders see outside occurrences.

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