The research fits best in the behavioral psychology because this interprets as to how Stella became ambitious and passionate because of the interaction of the environment which are factors that also affects how Cameron thinks and does. This supports the idea that they only do what they need to do because of how they will respond with the environment around them.
It is impotent to behave in PE class because misbehaving will also lead to distraction in many ways. If someone is being disruptive in PE class it was distract the whole class and most likely put the whole class behind.