The correct option is B. It takes readers from a world of reason and science to a world of monsters and terror.
Gothic literature was especially popular during Shelley's time (19th century), but also even centuries before.
The Gothic novel tradition began with Horace Walpole's The Castle of Otranto (1764), and typically features dark and often supernatural events and brooding villains. Gothic fiction is usually related to something dark, mysterious, scary, and supernatural.