Final answer:
The teacher is using a token economy, which is an application of operant conditioning that reinforces desirable behavior with tokens (stickers) that can be exchanged for rewards. The correct option is (c).
Step-by-step explanation:
The process the teacher is using with Dylan is known as a token economy. In a token economy, desirable behaviors are reinforced with tokens, which are secondary reinforcers that can be exchanged for rewards and prizes.
This system is very effective at modifying behavior, with studies showing improvements in behavior and academic achievement across various educational settings.
By giving Dylan a sticker as a token for demonstrating desirable behavior, which he can later exchange for a prize after collecting a sufficient number of stickers, the teacher is applying operant conditioning principles to encourage and reinforce positive behaviors.