Final answer:
The sentence that establishes a gothic setting truthfully and says the single bell bob flick it over head casting shadows on the castle wall is option 4. It accurately describes a gothic setting with descriptive language and imagery.
Step-by-step explanation:
The sentence that establishes a gothic setting truthfully and says the single bell bob flick it over head casting shadows on the castle wall is option 4) The single bell bob flicks it over head casting shadows on the castle wall, which establishes a gothic setting. This sentence accurately describes the action and atmosphere of a gothic setting with the presence of a bell, flickering shadows, and a castle wall. Using descriptive language and imagery, this sentence effectively creates a dark, mysterious, and gothic environment.