Answer:
The significant idea presented throughout the novel and highlighted by Robert's departure is:
A. Edna is ultimately alone in her rebirth.
Step-by-step explanation:
"The Awakening" is a book by author Kate Chopin in which the main character, Edna, breaks away from social conventions. She frees herself from moral obligations, awakens dormant feelings, and begins to pursue her own happiness. Robert is the man she falls in love with, even though she is married.
The passage we are analyzing here represents a bigger theme developed throughout the story. Edna is ultimately alone in her rebirth. Even though Robert played a major role in helping her rediscover her true emotions, needs, and desires, this new path must be followed by Edna alone. No one can do it for her. His final departure is a symbol for that precious loneliness, the solitude that will help Edna grow and become her true self.