Final answer:
The moral of the aunt's story lies in the cultural tradition that emphasizes the joy of giving, suggesting that moral behavior is rewarding in itself rather than expecting external rewards. While the story doesn't fit neatly into the provided options, it conveys the value of kindness and generosity.
Step-by-step explanation:
The moral or theme conveyed in the aunt's story in "The Story-Teller" is not explicitly one of the options provided (A, B, C, or D). Instead, the significance surrounding the story, particularly regarding Santa Claus, revolves around the joy of giving and the value derived from it. It serves as a cultural tradition that enforces the idea that you will be rewarded in the end not necessarily through material gifts but through the happiness and fulfillment that come from giving to others. The parallel can be tied to moral lessons throughout literature where the inherent complexities of human behavior and moral dilemmas present themes that go beyond simple didactic morals. One can argue that the overarching theme encourages generosity and finds merit in acts of kindness, suggesting that moral behavior is its own reward.