After Flooding Had Damaged Many Homes in the Midwest, Many

Multiple Choice

After flooding had damaged many homes in the Midwest, many families were displaced and stayed in shelters. An educational researcher studied the effect of the flood on student learning by comparing students whose homes had been destroyed with those students whose homes were intact. What data collection method did he use?

A) Descriptive study
B) Naturalistic experiment
C) Observational study
D) Case study