hard · LSAT Logical Reasoning

In a five-year study of a mid-sized city, neighborhoods that received a new streetlight-brightening program saw a larger drop in nighttime burglaries than neighborhoods that did not. City officials conclude that brighter streetlights deterred burglars by making it easier for passersby and neighbors to observe would-be intruders.

Which one of the following, if true, most strengthens the officials' explanation of the burglary decline?

  1. Neighborhoods got the brighter streetlights strictly by lottery, not because of prior burglary rates or any other neighborhood trait.
  2. The brightening program cost more per household on wide boulevards than on narrow residential side streets.
  3. Residents surveyed after the program said they felt modestly safer walking at night, whether or not their own block was newly lit.
  4. Total crime of every kind, violent and property alike, fell citywide over those same five years, including in unlit neighborhoods.
  5. Burglars surveyed in an unrelated nationwide poll ranked visibility as just one of several factors they weigh before picking a target.

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