​This System of Dams and Reservoirs on the ____ Provides

Multiple Choice

​This system of dams and reservoirs on the ____ provides water and electricity from hydroelectric plants at the major dams for approximately one of every eight people in the U.S.and is used to produce about 15% of the nation's crops and livestock.

A) ​Ohio River
B) ​Mississippi River
C) ​Colorado River
D) ​Columbia River
E) Great Lakes​