According to the frustration-aggression principle, frustration is responsible for creating anger and this anger leads to aggressive behavior. Frustration occurs when you are blocked by someone to achieve your particular goal and this frustration triggers aggression.
So will is frustrated after learning that he is not selected in the team which leads to aggression in him due to which he vandalized the team's locker room and broke several of the school's windows. So here his aggressive behavior can be best explained by the frustration-aggression principle.
