Final answer:
The moral of the story is that goodness will be rewarded, while selfishness will punished, aligning with the traditional portrayal of the consequences of moral behavior in folklore.
Step-by-step explanation:
The main message or moral of "The Story of the Old Man Who Made Withered Trees to Blossom" is D. Goodness will be rewarded, while selfishness will be punished. This folktale from Japan features morality and consequences of actions as its central theme. The kind old couple takes good care of their dog and in return, they are rewarded with treasure, whereas the spiteful neighbor faces dire consequences due to his greed. This storyline aligns with many traditional tales where moral behavior leads to favorable outcomes and vice versa.