A city council member argues: "Since installing speed cameras, accidents at major intersections have decreased by 30%. Speed cameras clearly save lives." Which of the following, if true, most weakens the argument?

Question

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B) During the same period, the city also redesigned the intersections with better signage. The argument attributes the accident decrease solely to speed cameras. If the city also redesigned intersections, there is an alternative cause for the decrease, weakening the causal claim.

A city council member argues: "Since installing speed cameras, accidents at major intersections have decreased by 30%. Speed cameras clearly save lives." Which of the following, if true, most weakens the argument?

✓ Correct Answer: Option B

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