If the Population for a Study Is Defined as the Student

Multiple Choice

If the population for a study is defined as the student body in a particular high school,and the sample is selected by randomly choosing classrooms at 11:00 AM and administering the survey to all the students in those classes,we are relying on:

A) simple random sampling.
B) nonprobability sampling.
C) cluster sampling.
D) stratified sampling.
E) convenience sampling.