What is the title of the short story by O. Henry about selfless love?

The title of the short story by O. Henry that embodies the theme of selfless love is "The Gift of the Magi." This story beautifully illustrates the concept through the actions of its main characters, who each make personal sacrifices for the sake of the other’s happiness. The narrative focuses on Della and Jim, a young couple who are deeply in love and willing to give up their most prized possessions to buy gifts for each other. Their selflessness and willingness to prioritize each other over their own desires demonstrate the powerful nature of love and sacrifice.

In contrast to the incorrect options, "The Tell-Tale Heart" by Edgar Allan Poe is a psychological thriller, while "A Good Man is Hard to Find," written by Flannery O’Connor, explores themes of morality and redemption, often with dark undertones. Finally, "1984," authored by George Orwell, is a dystopian novel dealing with themes of totalitarianism and surveillance, which does not align with the concept of selfless love portrayed in O. Henry's work. Therefore, "The Gift of the Magi" is the clear choice as it exemplifies the depth and beauty of love expressed through self-sacrifice.