Which Statement Accurately Summarizes the Way Psychologists Gather Research Participants

Multiple Choice

Which statement accurately summarizes the way psychologists gather research participants?

A) Psychologists usually use random samples of the population.
B) Psychologists typically use volunteers,often drawn from a college population.
C) Psychologists typically select participants at random from the phone book.
D) Psychologists only select participants who outwardly appear to be of average intelligence.