Explanation:

- Given word: Juvenile

- Refers to something related to young people; can also mean immature or childish behavior in a different context.

- Option 1: Wise

- Refers to having or showing experience, knowledge, and good judgment.

- Not related to being young or immature; rather the opposite.

- Option 2: Childish

- Pertains to behavior or characteristics that are typical of a child.

- This is often synonymous with juvenile in the context of behavior.

- Option 3: Insane

- Refers to a state of being mentally ill or extremely foolish.

- Not related to the concept of youth or immaturity.

- Option 4: Mature

- Opposite of juvenile; refers to being fully developed in terms of growth or behavior.

- Correct Answer: Option 2: Childish

- ? Juvenile and childish both relate to youthful or immature characteristics, especially in behavior.