Because yuri was curious about human behavior, he enrolled in an introductory psychology course. george registered because he heard it was an easy course that would boost his grade-point average. in this instance, yuri's behavior was a reflection of whereasgeorge's behavior was a reflection of
a. operant conditioning; classical conditioning
b. intrinsic motivation; extrinsic motivation
c. an unconditioned response; a conditioned response
d. a fixed-interval schedule; a variable-interval schedule

B. intrinsic Motivation; extrinsic motivation        

Explanation:

Intrinsic Motivation: It is defined as the process of executing a behavior or an action by an individual because he or she enjoys the activity. The individual gets the inspiration for acting himself or herself.

Example: A child plays the football match because he loves playing it rather than thinking to get an award after winning the match.

Extrinsic motivation: It is defined as the behavior of a person that is operated by external rewards, for example, fame, praise, money, and grades. In this case, the motivation originates from outside of the person.

Example: A person is doing a job because he is getting paid for the job.

The instance given in the question above, Yuri's behavior was a reflection of intrinsic motivation, whereas George's behavior was a reflection of extrinsic motivation.

a photo collage of women at work during world war 2