easy · GRE Verbal Reasoning
Last year the town of Ferndale replaced the dim sodium streetlights on Maple Avenue with bright LED fixtures. In the year that followed, nighttime traffic accidents on Maple Avenue dropped by roughly 30 percent. Town officials concluded that the brighter lighting caused the decline and now propose installing LED fixtures on every street in Ferndale.
Which of the following, if true, most weakens the officials' conclusion?
- The LED fixtures consume less electricity each night than the sodium lights they replaced did
- Accidents on Maple Avenue during daylight hours held steady across the very same twelve-month span
- During the same year, Ferndale also lowered Maple Avenue's speed limit and installed speed bumps along it.
- Residents living along Maple Avenue reported feeling much safer during their evening walks afterward
- On nearby Oak Street, which kept its old sodium lights throughout, nighttime accidents rose slightly that year
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