Answer:
Shelley creates a Gothic atmosphere in Frankenstein with the use of gloomy, dark imagery.
Explanation:
Shelley resorts to the conventional elements of gothic novels: supernatural beings/monsters (Frankenstein) and decaying settings (castles, churchyards, etc), and uses the imagery of darkness throughout the story. The opening sentence is already an example of that: "It was on a dreary night of November that I beheld the accomplishment of my toils".
