What crucial revelation do Miss Prism and Canon Chasuble contribute to Jack's background?

• A. Miss Prism's information about Jack's background is not revealed at all.
• B. Miss Prism reveals the baby-switch linking Jack to the Bracknell family, and Canon Chasuble's romance with Miss Prism adds to the ending's marriages.
• C. The revelation concerns Gwendolen's social status rather than Jack's lineage.
• D. Canon Chasuble's clerical career is exposed as a pretense and undermines the ending.

Answer: (B)

The main point this question tests is how revelations about Jack’s past reshape the play’s ending. Miss Prism finally confesses that she once misplaced a baby she was caring for, and that the infant found his way into the Bracknell circle through a handbag incident. That baby is Jack, tying him directly to the Bracknell family and making him the heir. This discovery explains why Jack is a suitable match for Gwendolen and resolves the social complications around his identity. At the same time, Canon Chasuble’s romance with Miss Prism is revealed, contributing to the light, double‑marriage ending Wilde creates. So the crucial moment is that Jack’s lineage is unveiled, linking him to the Bracknell estate, and that Miss Prism and Canon Chasuble’s relationship adds to the marriages that conclude the play.