Pavlov found that meat powder placed on a dog's tongue will make the dog salivate. In Pavlov's terms, the meat powder is

A) an unconditioned stimulus.
B) an unconditioned response.
C) a conditioned stimulus.
D) a conditioned response.

Unconditioned Stimulus

A stimulus that naturally and automatically triggers a response without the need for prior learning.

Conditioned Stimulus

A previously neutral stimulus that, after becoming associated with the unconditioned stimulus, eventually comes to trigger a conditioned response on its own.

Conditioned Response

A learned response to a previously neutral stimulus that has been repeatedly presented along with an unconditioned stimulus.