What question does queen ask the knight to correctly answer in order to spare his life?

In "The Knight's Tale" from Geoffrey Chaucer's The Canterbury Tales, the queen poses a critical question to the knight: she asks him to reveal what women truly desire most. The knight embarks on a quest to find the answer, ultimately discovering that what women most desire is sovereignty over their own lives and choices. By providing this answer, he earns the mercy of the queen and spares his life.