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? 

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.