Step 1: Concept Identification: The inquiry seeks the legal designation for an individual under 18 years of age who has committed a criminal offense.
Step 2: Detailed Analysis:
(1) Orphan: This term denotes a child whose parents are deceased, unidentifiable, or have relinquished parental rights. It pertains to familial status, not legal actions.
(2) Peer: A peer is an individual of equivalent age, standing, or capability to another.
(3) Scouts: This refers to a member of the Scout Association, an organization dedicated to the holistic development of young people.
(4) Juvenile: Legally, a juvenile is an individual who has not attained the age of majority (typically 18). The term "juvenile delinquent" or "child in conflict with the law" applies to a juvenile who has contravened criminal law. "Juvenile" itself is the term used for this demographic within the legal framework.
Step 3: Conclusion: The appropriate legal and societal term for individuals under 18 who engage in unlawful activities is "juvenile."