After Pavlov's dogs became conditioned to salivate at the sound of the bell, he experimented with sounding the bell and then failing to present the dogs with any food right away. Soon they stopped salivating to the sound of the bell. This represents the process called .

The answer is extinction.

Explanation:

In classical conditioning, extinction refers to the eventual cessation of a response to a stimulus. In other words, a subject stops reacting to a conditioned stimulus. In operant conditioning, exctinction may occur because the reinforcement is no longer present. For example, a child might stop cleaning his room if his mom stops rewarding or recognising him.

i want to say death; parole, probation, and fines are still being used all the time.

answer; earthquake;