In classical conditioning, the is an unlearned reaction to a given stimulus. For example, if you have an allergy to pollen and sneeze, sneezing is an unlearned reaction to the pollen (i. e., the stimulus). Group of answer choices

unconditioned response

Explanation:

Russian physiologist Ivan Pavlov put up the theory of classical conditioning, which is a learning mechanism that takes place through a combination of environmental stimuli and natural stimuli. In simple terms,  the unconditioned stimulus ( UCS) induces an unconditioned response in the individual. This signifies that the stimulus in the setting has generated a response that is unconditioned or we can say an unlearned behavior. This a stage before conditioning takes place.

answer; the parasympathetic nervous system;