Which of the Following Instances Would Be the Most Effective

Multiple Choice

Which of the following instances would be the most effective use of mild punishment in a behavioral contract?

A) A person wanting to lose weight sends money to a political candidate he detests if he does not meet a specified loss of weight by a weekly weigh-in.
B) A person uses a metal cigarette holder with a tip that is heated by the burning tobacco to make smoking unpleasant.
C) A person records the feedback of those around him in order to change his outlook and mood.
D) A person has to spend an hour studying before he can watch half an hour of TV.