A Sociologist Studying Freshmen at a Major University Carried Out

Multiple Choice

A sociologist studying freshmen at a major university carried out a survey, asking (among other questions) how often students went out per week, how many hours they studied per day, and how many hours they slept at night. The sociologist used an introductory sociology class to carry out the survey, instructing the students to participate only if they were freshmen. The sample consists of:

A) the students enrolled in the class.
B) the students who were in class for the survey and answered the survey questions.
C) the freshmen at the university.
D) the freshmen in the class who answered the survey questions.