Final answer:
Nathaniel Hawthorne's "sweet moral blossom" is a metaphor for the lessons learned about human nature and morality in his literary works.
Step-by-step explanation:
The "sweet moral blossom" presented by Nathaniel Hawthorne in his various literary works is often a symbol of a lesson learned from confronting the complexities of human nature and the interplay of good and evil.
Hawthorne's stories, such as "Young Goodman Brown," "The Birthmark," and others, convey deep moral and ethical themes. The metaphorical blossom could be said to originate from the personal growth and self-awareness characters experience as they grapple with these profound themes.