Final answer:
The similarity between "The Rime of the Ancient Mariner" and "Frankenstein" is that both works explore themes of guilt and isolation.
Step-by-step explanation:
The question is asking to identify the similarities between "The Rime of the Ancient Mariner" and "Frankenstein." Both works explore themes of guilt and isolation, which makes option C the correct answer. "The Rime of the Ancient Mariner," is a poem written by Samuel Taylor Coleridge, not William Wordsworth, and it shares the Gothic elements with Mary Shelley's "Frankenstein," which is a novel, not a romance novel. Both works reflect the Romantic themes of their time, dealing with the supernatural, the natural world, and deep emotional states.