Of the Following, Which Is an Example of a Behavior-Modification

Of the following, which is an example of a behavior-modification technique for weight loss? Of the following, which is an example of a behavior-modification technique for weight loss?

A) Create a blog about your overeating habits to create a like-minded community.
B) Download an app to keep a record of your eating and exercise habits.
C) Create the "Clean Plate Club" at home and reward family members appropriately.
D) Eat with a buddy who will monitor your food intake.
E) Cook your own meals and eat alone to focus on your own habits.