According to "Introduction to Dark Romanticism: American Gothic," why is Hawthorne’s work defined as Dark Romantic writing?

Dark Romantic writers explored human sin, guilt, and moral weakness rather than presenting people as wholly good. Hawthorne’s stories often examine hypocrisy and harsh judgment in Puritan communities, so his themes illustrate the flaws of Puritan society. The best choice is “His themes illustrate the flaws of Puritan society.”

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