Which age group is classified as a juvenile under these regulations?

The classification of a juvenile typically refers to individuals who have not yet reached the age of majority, which is commonly set at 18 years old in many jurisdictions. Therefore, the correct classification as a juvenile would encompass any individual who is not yet 18. This means that all individuals aged 17 and younger fall under the juvenile classification, as they have not reached the legal age of adulthood.

The other options, while partially accurate in certain contexts or jurisdictions, do not fully capture the standard definition used in many legal frameworks. For example, defining a juvenile as anyone aged 16 or younger may exclude a 17-year-old, which is not consistent with the broader legal understanding of youthful offenders or minors.