Answer:
Mitchell is worried that he has hurt Ghost Wind.
Step-by-step explanation:
As intrinsic motivation refers to the action or feeling driven by internal needs, the part of this excerpt that shows intrinsic motivation is "Mitchell is worried that he has hurt Ghost Wind."
It can be inferred from the excerpt that Mitchell felt really bad when he got Ghost Wind hurt. Though he had no intentions of hurting it, he is now worried how Paul's father might react to it. He is completely feeling guilty of what would happen all because of him.