Question

40. Zack and his mom are baking cookies together for the first time. The first time the oven timer goes off, Zack shows no particular response. Then Zack gets to eat one of the cookies from the cookie tray that his mom pulls out of the oven, causing his mouth to water. From then on, every time Zack hears the oven timer, Zack's mouth begins to water. This is best described as A) operant conditioning, with the sound of the oven timer as the negative reinforcer B) operant conditioning, with mouth watering as the negative reinforcer C) classical conditioning, with mouth watering as the conditioned stimulus D) classical conditioning, with the sound of the oven timer as the unconditioned stimulus E) classical conditioning, with the sound of the oven timer as the conditioned stimulus