The answer to your question is option C. The man can begin to neglect her.
Explanation:
In "A Warning Against Passion," the key message the author is trying to reflect is that people should be careful about how they love. One of the examples brought up is Brontë giving the warning that if a woman loves too much, she might lose herself and come off as desperate, which will in turn repeal her man, causing him to neglect her.
