Final answer:
Juvenile delinquency is the term used to describe an act that is illegal only for children, such as truancy. It is a separate category from felonies and misdemeanors and refers to the illegal actions committed by minors who have not yet reached the age of adulthood.
Step-by-step explanation:
An act that is illegal only for children, such as truancy (skipping school), is called juvenile delinquency. Juvenile delinquency refers to the illegal actions committed by minors who have not yet reached the age of adulthood. It is a separate category from felonies and misdemeanors, which apply to adults. Truancy is an example of a behavior that is considered illegal for children but not for adults.