Professor Loman Is Interested in Conducting a Study Examining the Impact

Professor Loman is interested in conducting a study examining the impact of class discussions on students' overall understanding of course concepts. In his experiment he uses a convenience sample of college-aged students. Ultimately, this is not a problem for the given study, because:

A) all psychology studies use college-aged samples.
B) convenience samples measure nearly the entire population of interest.
C) the impact of class discussion on course comprehension is believed to be a universal phenomenon.
D) college students are the target population for this particular study.