Which of the Following Behaviors Will Be Easiest to Extinguish

Multiple Choice

Which of the following behaviors will be easiest to extinguish?

A) A little boy who helps with household chores is occasionally paid for his efforts.
B) A woman goes to her local market for four days in a row to get prime rib but finds it unavailable.
C) A teenage girl gets home before midnight so that her parents will not punish her.
D) A traveling salesman uses a particular come-on with considerable success in cities all across the country; it almost always works.