Answer:
Aggressive behavior
Step-by-step explanation:
Aggressive behaviour are actions that intimidate or inflict physical harm, like fighting, bullying, being abusive to people.
Conduct disorder is a fairly common but sometimes ignored impairment of mental health in children and adolescents that causes rebellious behavior and often extreme violent and antisocial behavior.
Copper is taller than most of of his classmates and a result, he intimidate and bully his classmates this imreflect an aggressive behavior conduct disorder.