Ms. Alvarez argues that the city's bike-share program has reduced traffic congestion, because the number of cars entering the downtown area fell by 8 percent in the year after the program began.
Which one of the following is an assumption on which the argument depends?
Answer and explanation
Correct answer: B. The fall in cars entering downtown was not caused by something other than the program
- Step 1: The argument treats the timing as proof that the program caused the fall. Step 2. It therefore needs the fall to have no other cause. Answer: no other cause. Why not the others: cost, other cities and universal use are not needed.
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