Who is most at risk of becoming a bully?

Kids/teens who do not get love and attention at home, who may feel voiceless and want to feel a sense of power and authority.

A child who has participated in physical altercation

answer: i would say the brain but it seem that you have a brain.

because health skills are tools and strategies and also practical skills are also something you need to learn (like tools and strategies) and put it in reality.