Answer:
B. intrinsic Motivation; extrinsic motivation
Step-by-step 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.