Based on the author's view about the relationship between children's aggressiveness and their age, which of the following is true?
Adolescents' aggressiveness is often displayed in the form of competition.
A 2-year old boy knows that it is not correct to behave aggressively.
The older children become, the less aggressive they will be.
6- to 12-year-olds enjoy war games but develop them into argument and serious fights.