Answer:
Conditioned stimulus
Explanation:
Conditioned stimulus: Conditioned stimulus is one of the important elements of the classical conditioning experiment that is given by Ivan Pavlov.
Ivan Pavlov's theory of classical conditioning depends on the learning principle in which he believed that a stimulus pairing can give rise to a conditioned response.
Hence, the conditioned stimulus in classical conditioning is defined as a neutral stimulus, that is being associated with the unconditioned stimulus triggers or lead to a conditioned response.
Example:
1. Unconditioned stimulus- food's smell.
2. Conditioned stimulus- Sound of the whistle.
3. Unconditioned response- feeling hungry.
4. Conditioned response- feeling hungry after hearing the whistle sound.