At a local community college, five statistics classes are randomly selected and all of the students from each class are interviewed.

What sampling technique is used?

A. convenience

B. systematic

C. random

D. cluster

E. stratified

D. cluster

Step-by-step explanation:

Convenience: Based on availability.

Systematic: The first element is sorted randomly, then the others follow a pattern.

Random: Each member of a sample has the same probability of being sorted.

Cluster: Each group is cluster, and when a cluster is sorted, every member of the group is sample. This is the correct answer.

Stratified: Population is divided into groups and then members from these groups are sorted.