Final answer:
The example of Abigail being put in time out after crushing her candy is an example of negative punishment in operant conditioning.
Step-by-step explanation:
The example of Abigail being put in time out after crushing her candy is an example of negative punishment in operant conditioning. Negative punishment involves removing a pleasant stimulus to decrease a behavior. In this case, Abigail's mother is removing Abigail from the desirable activity of playing with her crushed candy to decrease the behavior of crushing candy on the floor.