Final answer:
In classical conditioning, a product is presented with a naturally appealing stimulus to create an association between the two. Over time, the product becomes the conditioned stimulus and the naturally appealing stimulus becomes the unconditioned stimulus.
Step-by-step explanation:
In classical conditioning, a product is presented along with a naturally appealing stimulus to create an association between the two. The stimulus that is naturally appealing (e.g., a physically attractive person) is the unconditioned stimulus and the product is the neutral stimulus at the beginning. However, over time, the product becomes the conditioned stimulus, and the naturally appealing stimulus becomes the unconditioned stimulus.