Jack Is Studying Psychology and Wants to See How People

Multiple Choice

Jack is studying psychology and wants to see how people behave when his friend enters an elevator and keeps her back to the door versus behavior when she stands near a doorway between classes.He designs his study so that the people he is watching do not know that they are being studied.His research method is ____________.

A) naturalistic observation
B) survey
C) case study
D) experimental