Which Teacher Seems to Understand the Ethics Involved in Using

Multiple Choice

Which teacher seems to understand the ethics involved in using behavioral methods?

A) "You will receive a reward for finishing your work on time.I hope everyone gets the reward at the end of the day."
B) "This is an infraction of the rules.You will be punished every time you break a rule."
C) "You need to sit still and raise your hands to be recognized.Stop blurting out spontaneous responses."
D) "Stay in your seat until you finish this task and meet your goal.It will help you focus on the material and learn."