Correct option is A
- The word young refers to someone or something in an early stage of life or development.
- The opposite should describe a later stage of life or development.
- Old directly means advanced in age or maturity, making it the clear antonym of young.
- Child and Childish imply youth or immaturity, which are similar to young, not opposites.
- Immature also aligns with young in terms of lack of maturity, not its opposite.
- Thus, Old is the correct answer as the direct antonym.
