Every time benny slices onions, the onions burn his eyes and tears run down his face. one day, he opens the silverware drawer, pulls out the knife that he uses only to peel onions, and immediately starts to shed tears from the sight of the knife. in this situation, the onion is the and the knife is the

unconditioned stimulus;   conditioned stimulus

Explanation:

In classical conditioning, the unconditioned stimulus is one that initiates a response unreservedly, naturally, and automatically.

One may instantly feel very hungry when you smell one of your favorite dishes. In this instance, the unconditioned stimulus is the aroma of the food.

The conditioned stimulus is a formerly neutral stimulus, which eventually comes to cause a conditioned response after becoming paired with the unconditioned stimulus.

because they hate school just like you oh yeah yeah

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