A Research Participant Is Given a Dose of the Drug

Multiple Choice

A research participant is given a dose of the drug naloxone and then his arm is placed in a bucket of ice water, which is normally quite a painful experience. It is likely that the

A) participant will experience little or no pain.
B) participant will experience a placebo effect.
C) participant will undergo a painful experience.
D) participant's body will stop producing endorphins.