Final answer:
Jung is likely a late-maturing boy due to his cautiousness, rule-following demeanor, and his concern about being liked, which aligns with the challenges late-maturing boys often face.
Step-by-step explanation:
Based on the description provided, Jung is probably a late-maturing boy. Research indicates that early-maturing boys are generally more confident and independent, while late bloomers may feel self-conscious about their physical development. However, late-maturing boys may also be good-natured and popular, but potentially more at risk for issues like depression and conflict with parents, as they are more likely to be bullied than their early-maturing counterparts. The emphasis on caution and following rules, along with a concern about being liked, align more closely with the experiences typical of late-maturing adolescents.