Which among the following novels is not written by Mary
Shelley?

The correct option is The Lost Woman.

Detailed Explanation:
Mary Shelley (1797–1851) was an English novelist, dramatist, and travel writer, best known for her contributions to Gothic literature and early science fiction. To identify the work not authored by her, let's look at the given options:
• Frankenstein: First published in 1818, this iconic Gothic novel is Mary Shelley's most famous masterpiece, telling the story of scientist Victor Frankenstein and the creature he constructs.
• The Last Man: Published in 1826, this is an apocalyptic science-fiction novel written by Mary Shelley that tells the story of a future world devastated by a global plague.
• Falkner: Published in 1837, this is the final completed novel written by Mary Shelley, which explores themes of parental education, social rehabilitation, and female heroism.
• The Lost Woman: This is not a novel written by Mary Shelley. The Lost Woman is a seventeenth-century tragicomedy play written by the English dramatist and colonial governor Sir William Berkeley.

Thus, among the listed titles, The Lost Woman is the only one that was not written by Mary Shelley.