Chey is taking a psychology class that involves classical conditioning two groups of rats, using a tone (cs) followed by a shock (ucs) for group 1, and using a taste (cs) followed by a shock (ucs) for group 2. when asked what she is examining, she answers that she's looking at:

The answer is conditioned response.

Explanation:

The conditioned response occurs when a person or animal associates a stimuli with a directly unrelated consequence (unconditioned stimuli).

This was demonstrated by Russian scientist Ivan Pavlov, who would ring a bell before feeding a dog. Soon, the dog would start salivating just by hearing the sound of the bell.

The Equator

The Equator, or line of 0 degrees latitude, divides the Earth into the Northern and Southern hemispheres. The Northern Hemisphere contains North America, the northern part of South America, Europe, the northern two-thirds of Africa, and most of Asia.

Explanation: