Which of the following illustrates an unconditioned stimulus (UCS) ?

A) blinking when air is blown into your eye
B) blinking, when you hear your favorite song
C) your favorite song
D) a puff of air to your eye

Unconditioned Stimulus

In classical conditioning, a stimulus that naturally and automatically triggers a response without any prior learning.

Favorite Song

Favorite Song is a subjective choice that holds personal or emotional significance to an individual, often linked to memories, feelings, or specific life events.

Blinking

A rapid closing and opening of the eyelids, which serves as a protective mechanism for the eyes by helping to keep them moist and free from irritants.