Ariel ordered pizza from a national pizza chain and became very ill immediately after eating it. years later, ariel still feels queasy when she sees an advertisement for the pizza chain or drives by one of its establishments. in this example, the pizza establishment is the

conditioned stimulus

Explanation:

Classical conditioning is a case of learning where a biologically potent stimulus is combined with a stimulus which was previously neutral.

Here, the biologically potent stimulus or conditioned stimulus was the pizza from the national pizza chain, the advertisement is the stimulus which was previously neutral and her feeling of nausea is the conditioned response.

propioception;