The best choice from the options provided is:
The bird represents Mrs. Wright when she was young and happy; Mr. Wright destroyed his wife’s joyful spirit.
In Susan Glaspell's play "Trifles," the canary symbolizes Mrs. Wright's lost happiness and her former self before her marriage to Mr. Wright. The bird’s singing reflects Mrs. Wright’s own suppressed desires and joys, which were stifled by her controlling and abusive husband. When Mr. Wright kills the bird, it signifies the ultimate destruction of Mrs. Wright’s spirit and dreams, mirroring her isolation and despair in her marriage.