3. Janna, a real estate agent, desperately wants to sell a home. She tells the owner to place a pan of vanilla extract in the oven and heat it just before the prospective buyers arrive to look at the house.

Janna knows that the smell of vanilla in the house will increase the chance that the buyers will like the house because they have been classically conditioned to respond favorably to the smell of vanilla. In this example, what is the CR?

a. The pleasant emotions evoked by the smell of vanilla

b. The smell of vanilla

c. The memory of Grandma baking cookies

d. The house