More than 25,000 children in Flint, Michigan, drank lead-contaminated water over an 18-month period between 2014 and 2016. Based on the graph below,
what effect is the contaminated water likely to have on the city of Flint?
Lead level versus violent crime
25
800
20
640
15
480
10
320
Average lead level in preschool child's
5
blood, ug/dL
160
Violent crimes per 100,000 people
0
0
1937 1942 1947 1952 1957 1962 1967 1972 1977 1982 1987
1960 1965 1970 1975 1980 1985 1990 1995 2000 2005 2010
A. It is likely to decrease Flint's violent crime rate in about 20 years.
B. It is likely to decrease Flint's violent crime rate immediately.
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C. It is likely to increase Flint's violent crime rate in about 20 years.
D. It is likely to increase Flint's violent crime rate immediately.