Juan is taking advanced placement chemistry in high school because he loves science and is fascinated by chemistry experimentation. david is taking advanced placement chemistry because his guidance counselor told him he had to if he intended to apply to a pre-med program at a competitive university. unlike david, juan is motivated by motivation.

Intrinsic

Explanation:

Motivation is the reason a person has in order to do something. There are two types of motivation

Intrinsic

This type of motivation is the motivation that comes from within one's self. It is done for getting satisfaction for one's self.

Extrinsic

This type of motivation is the motivation that occurs by external factors.

Here, Juan's own love of science motivates him to take advanced placement chemistry classes. Whereas David's motivation is that in order to apply to a pre-med program at a competitive university he needs to take advanced placement chemistry which is an external factor.

Hence, Juan is motivated by intrinsic motivation.