Which method of assessment is most likely to be used as part of implementing the Premack principle?

According to Tennant (2001), job stress is consistently linked with:

a) Anxiety b) Management staff who have Type A personalities c) Personal health problems d) Depression

Mark has been attending a religious study with friends from his dorm. He really likes these people, although he thinks that their interpretation of the sacred text is dead wrong. Yet in the meetings, he tends to agree with them to avoid conflict because he enjoys their friendship so much. Mark is most likely experiencing ____

a. private acceptance b. public compliance c. persuasion d. repetition with variation