Flooding of the Mississippi River Basin in 2008 Was Caused

Multiple Choice

Flooding of the Mississippi River basin in 2008 was caused, or exacerbated, by all of the following EXCEPT:

A) faulty dams upstream of major flooding areas.
B) several months of unusually heavy precipitation.
C) levees that failed to hold back floodwaters.
D) draining wetlands.
E) building on flood plains.