When critiquing sample size in a study, which of the following study type would require the largest sample size?

Question

Quizplus · Accepted Answer

Descriptive studies and correlational studies often require very large samples. In these studies, multiple variables may be examined, and extraneous variables are likely to affect subjects' responses to the variables under study.
Because of the requirements of an experimental study, its sample size is likely to be smaller than a correlational or descriptive study size.
Grounded theory is a type of qualitative research and likely to have a relatively small sample size.
Phenomenology is a type of qualitative research and likely to have a relatively small sample.

When Critiquing Sample Size in a Study, Which of the Following