Which of the following actions is considered delinquent behavior?

Delinquent behavior refers to actions taken by minors that violate the law or societal norms. Among the options provided, habitual truancy or running away from home is clearly categorized as delinquent behavior. Truancy entails skipping school without permission, which not only disrupts the educational process but may also lead to legal consequences for the minor and potentially their guardians. Similarly, running away from home can involve legal ramifications due to concerns for the minor's safety and well-being.

In contrast, participating in sports, completing homework, and attending school regularly are positive behaviors that contribute to a minor's development and societal integration. They are encouraged and do not infringe upon laws or societal expectations, thus not fitting the definition of delinquent behavior. The focus here is on how habitual truancy or running away directly relates to law violations, establishing its classification as delinquent behavior.