A womean is using behavior modification to change her eating habits in order to lose weight. which of her behaviors would be most successful for changing a particular cue

The behavior which would be most successful for changing her eating habits in order to lose weight would be asking for a box at the beginning of the meal to split the portion on her plate when eating out.

Behavior modification, a method based on the work of B. F. Skinner, is an approach that aims to change unneeded behaviors with more advantageous ones thru either negative or positive reinforcement.