One day melissa was trapped alone in an elevator for almost 3 hours when the power went out. now, whenever she gets near an elevator, she freezes up and starts gasping for air as if she cannot breathe. this is an example of:

The belmont principle of beneficence requires that: a. subjects derive individual benefit from study participation. b. potential benefits justify the risks of harm. c. the study makes a significant contribution to generalizable knowledge. d. risks are managed so that they are no > minimal.