Her conflict with Hamlet raises gender role issues - because Hamlet is one of the many people who define Ophelia by her sexuality. She has no control over her body, her relationships, or her choices throughout the story.
Her beauty and charm is a model of female stereotype - completely obedient and passive; she refuses to fight back when she really needs to
As for the other options, Ophelia DOES have a small role to play (portrayed as static and one-dimensional), but I don't see how that could be a reason why she is a character of such great interest and debate. As for her mental stability, she eventually experienced a mental breakdown. This is due to her confusion of Hamlet's words and actions; all this trauma is enough to make even the most stable of individuals crack. In the end, I'm not completely sure about which options to rule out.
