Adolescents who use aggression deliberately, known as , are much more popular than adolescents who use aggression without planning to, known as .

Instrumental aggression; reactive aggression, are the right answers.

Explanation:

The term aggressive behaviour is used to refer to the behaviour which is aggressive in nature to achieve a goal. Aggressive behaviour is employed against another individual to secure some reward or to achieve some goals.

On the other hand, the term reactive aggression is used to refer to the aggressive behaviour evoked by provoking, threatening or frustrating a person. This reactive behaviour peaks during the adolescence period of a person.

The only difference between the two behaviour is that while the aggressive behaviour generates in a person on his own, the reactive behaviour develops as a result of provoking or threatening of others.