Answer:
The character's ambitions are revealed.
Step-by-step explanation:
Indirect characterization is the process used by writers in revealing the character of a story through his speech, actions and thoughts. This process of revealing the character's personality through his manners and thoughts enables the readers to know or learn more about him/ her.
In the given passage provided in the question, the ambitions of the character is revealed through his speech. He revealed his plans for the future, thinking what he can do from high school through college. This is an example of indirect characterization. And through this description, we can know that the character is an ambitious person.