Six years ago, the police force of Harrisville was reduced, in an effort to make a smaller but more efficient force. In the first two years, crimes in Harrisville, especially by career criminals, were at a higher rate than they had been in the previous decades. Then, for the most recent four years, the crime rate has been the lowest in the seventy years on record, with the significant drop in crimes by career criminals.
Which of the following, if true, most helps to explain the change in the crime rate between the first two years after the change and the last four years?
-
AOf the seventy similar sized cities in this and neighboring states, 40% reported some drop in the crime rate over the last four years.
分析该选项
-
BThe population of Harrisville increased slightly each year over the last six years, with a large number of senior citizens moving to a substantial retirement community within the city.
分析该选项
-
CBy the end of the second year of the newly organized police force, a large proportion of career criminals operating in Harrisville had been captured and incarcerated.
分析该选项
-
DDuring each of the last six year period, retention and graduation rates at the local high schools have increased.
分析该选项
-
ETwo years after the change in the police force, police began daytime foot patrols in the downtown region.
分析该选项
显示答案
正确答案: C