Final answer:
In The Stronger, Miss Y is the young, unmarried, quiet, and aloof character.
Step-by-step explanation:
The character in The Stronger who is young, unmarried, quiet, and aloof is Miss Y. She is portrayed as a mysterious and withdrawn individual, offering little information about herself to others. Her reserved nature and lack of personal connections make her a distinctive character in the play.
Learn more about characters in The Stronger