Which of the following is a good example of behavior modification for changing snacking behavior?
A. When I want a snack, I'll take a 20-minute walk, then reevaluate whether or not I still want it.
B. When I want a snack, I'll take only half of what I really wanted.
(C.) I won't purchase any extra food.
D. I won't eat dessert so I can have snacks throughout the day.