DrYen Is Designing an Experiment on Obedience to Authority

Dr.Yen is designing an experiment on obedience to authority.She will set up a learning laboratory and have participants deliver loud blasts of sound as punishment for incorrect answers given by a confederate of the researcher.How can Dr.Yen increase the likelihood of the participants' obedience?

A) She can set up the learning laboratory in a room above a restaurant.
B) She can make sure the participants know that she has a Ph.D.from a prestigious university.
C) She can make the participants think she is unsure of her role as an authority figure.
D) She can have a second confederate in the room,who should be a role model for defiant behavior.