hard · LSAT
A municipal study found that neighborhoods that installed brighter LED streetlights last year reported 30 percent fewer nighttime burglaries than neighborhoods that retained their older sodium-vapor lamps. The city council concluded that brighter streetlighting deters burglars, and it has proposed converting every remaining neighborhood to LED lighting in order to reduce crime citywide.
Which one of the following, if true, most weakens the council's argument?
- The neighborhoods that received LED lighting were selected precisely because residents there had recently organized active citizen patrols, which are independently known to reduce burglary.
- LED streetlights consume substantially less electricity than sodium-vapor lamps, lowering the city's overall energy expenditures.
- Brighter streetlighting completely eliminates the possibility of any nighttime crime occurring in illuminated areas.
- Daytime burglaries increased slightly across all neighborhoods during the same period the study covered.
- Residents of the LED-equipped neighborhoods reported feeling considerably safer walking outdoors after dark.
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