Jill decides to study harder in class after seeing her teacher praise her classmate, Ricky, for doing well on a test. In the context of observational learning, this scenario best exemplifies learning through .

Modeling

Explanation:

Observation learning was a theory that was proposed by Alert Bandura. It was social learning theory. Albert Bandura experimented on Bobo Doll. It was a famous experiment. In this experiment, it is shown that how observation or imitation affects children's behavior.

Modeling was one of the parts of observational learning theory. Through modeling, a student can learn a behavior. For instance, if most of the children imitate their parents as they behave, children start performing the same behavior. Thus behavior was the result of modeling observation of teacher behavior with Ricky on his performance in class.

vicarious reinforcement                                                  

Explanation:

vicarious reinforcement: In psychology, the term "vicarious reinforcement" is described as a process that arises when the propensity of a specific behaviors increases as a consequence of observation in which another person is being rewarded for the similar behaviors.

In other words, vicarious reinforcement is described as a phenomenon in which an individual observes or watches that a specific model is being rewarded for certain behavior.

In the question above, the given statement signifies "vicarious reinforcement".

because the early people found out about it.