Idu ate a bad batch of clam chowder and became ill with food poisoning. Now he finds that even the smell of clam chowder can make him feel queasy. In this example, the unconditioned stimulus is .

the clam chowder that Idu consumed.

Explanation:

The unconditioned stimulus is simply referred to as a stimulus that triggers a response naturally and unconditionally. It simply means that such response takes place without the person having any prior learning.

Based on th Information given in the question, the the unconditioned stimulus is the clam chowder that Idu consumed.

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