Which of the following best describes 'juvenile'?

The term 'juvenile' primarily refers to a young or immature individual, typically one who has not yet reached adulthood. This definition encompasses individuals in their developmental stages, both biologically and socially. In legal contexts, ‘juvenile’ may also refer to a minor who is not yet of legal adult age and is subject to the juvenile justice system rather than the adult criminal justice system.

The choice that identifies 'juvenile' as a young or immature individual accurately captures the essence of the term and aligns with common usage in various fields, including law, education, and social services. Understanding this concept is essential for those working in law enforcement or related fields, as juveniles are treated differently under the law and may require specific considerations due to their age.

The other options describe categories of individuals that are not compatible with the definition of 'juvenile.' An adult, for instance, signifies someone who has reached maturity and legal age, while a wise elder and a seasoned veteran both refer to individuals with significant life experience and knowledge, further distinguishing them from the youthful connotation of 'juvenile.'