Beginning in the 1990s, Crime Rates Began to Decline Nationwide

Multiple Choice

Beginning in the 1990s, crime rates began to decline nationwide. In 2011, the Federal Bureau of Investigation announced that crime rates had reached a 40-year low. What factor may account for this trend?

A) worsening economic conditions
B) increasing use of sophisticated home security systems
C) increasing use of cocaine and other illegal drugs
D) increasing levels of lead in Americans' blood