Final answer:
Extinction occurs when a previously reinforced behavior decreases and stops because the reinforcement ceases. It is not a specific part of shaping, but can occur outside the shaping process when reinforcement of a behavior is discontinued.
Step-by-step explanation:
The procedure that includes extinction is not explicitly mentioned in the options provided (A. Differential reinforcement, B. Shaping, C. Task Analysis). However, regarding operant conditioning, extinction refers to the process where a previously reinforced behavior is decreased and finally stops occurring because the reinforcement is no longer provided. An example of extinction can be seen in fixed interval schedules where if reinforcement does not come at the expected time, the behavior quickly reduces.
Shaping is a technique used to teach new behaviors by rewarding successive approximations of the target behavior. The process of shaping does not inherently include extinction, but rather focuses on the positive reinforcement of behavior.