Who expresses gratitude for a miraculous transformation attributed to a woman?

The correct answer is Jill Surgeoner. In “Fifth Business,” Jill expresses gratitude specifically in relation to her transformation and newfound sense of purpose after experiencing a deep connection with Mary Dempster. Jill recognizes the profound impact that Mary—a character often associated with spiritual insight and miraculous events—has had on her life. This connection signifies a change in Jill's understanding of herself and her place in the world, which she attributes to Mary’s influence.

Dunny, David, and Mary do not embody the same type of gratitude directly tied to their personal growth through Mary’s influence. Dunny’s journey is focused more on his own self-realization and grappling with his past, while David's experiences are clouded by his struggles with identity and societal roles. Mary Dempster, as a figure in the narrative, is more of a catalyst than a participant expressing gratitude. Thus, Jill’s acknowledgment of Mary's transformative effect illustrates the novel’s themes of interconnectedness and the profound impact of individuals on each other's spiritual and emotional journeys.