It can be considered as Greek mythology.
Answer:
She explains to him that he has an upper hand in the situation (knowing that Jack was saying bad things about him). She then tells him that if he refuses to go back to school on his own, she'll tell their parents who will tell the school principle and that everyone will start treating him like a freak that needs to go to a special needs school. That is ultimately what makes up his mind to go back.
The theme of bildungsroman is characterized by the maturing of a main character, usually from childhood to adulthood, or an increase in maturity over the period of the fictional piece. Therefore, the answer would be 4.) The protagonist progresses from childhood to adulthood.
Hope this helps!
C on the 2nd and third sentence