Premise: city's parks budget rose 10% and crime fell 5%. Conclusion: parks reduce crime. Assumes:
ACrime statistics are accurate.
BNo other variable explains the drop.
CParks are accessible city-wide.
DCrime is up nationally.
Answer & Solution
Correct answer: B. No other variable explains the drop.
1. Rules out confounders → causal link possible.
_Source: 501-GMAT-Questions Ch 2 Critical Reasoning_
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