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题目材料：
In an attempt to reduce the number of violent crimes committed by juveniles, the city of Fiera imposed a curfew requiring juveniles everyone younger than eighteen-to be indoors between the hours of 11 P.M. and 6 A.M. In the two years since the curfew was imposed, the number of violent crimes committed by juveniles in Fiera has fallen by almost ten percent. Clearly, therefore, the curfew has proven effective at reducing violent juvenile crime.
Which of the following, if true, most strengthens the argument?
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A.The majority of nonviolent crimes committed by juveniles in Fiera occur between 3 P.M. and 8 P.M.
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B.The overall rate of violent crime in Fiera has gone up slightly over the past two years.
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C.After varying around an apparently stable average for several years, the number of violent crimes committed by juveniles in Fiera increased by twelve percent the year before the imposition of the curfew.
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D.Over the last two years, the city of Fiera has substantially increased the size of its police department and made some changes in the crime-fighting tactics the police use.
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E.Over the past two years, fewer juveniles have been arrested in Fiera for curfew violations than have been arrested for violent crimes.
B显示答案
