First, the population is subdivided by metropolitan area. Then a crime researcher uses a random number generator to select twenty-five members from each metropolitan area to study. A. CensusB. Simple Random SamplingC. Stratified SamplingD. Cluster SamplingE. Systematic SamplingF. Convenience Sampling

C. Stratified Sampling

Step-by-step explanation:

Stratified sampling is a sampling method in which the overall population is divided into a number of smaller sub groups.

These smaller sub-groups are called as strata.

These sub-groups are formed on the basis of similar characteristics and attributes shared by the population.

It is also known as proportional random sampling.