Final answer:
The predominant mood in Guy de Maupassant's 'An Uncomfortable Bed' is humorous, as the story unfolds into a light-hearted sequence despite the protagonist's fears of a practical joke.
Step-by-step explanation:
The predominant mood in Guy de Maupassant's An Uncomfortable Bed is actually humorous. This is evident through the playful and light-hearted tone that the author uses to describe the protagonist's paranoia about being the victim of a practical joke while spending the night at a friend’s chateau. Despite his worry and the suspenseful atmosphere he finds himself in, the situation unfolds into a humorous series of events as his fears are confirmed but turn out to be harmless fun. In contrast, the excerpts provided, which are from Edgar Allan Poe's The Fall of the House of Usher, depict a suspenseful and mysterious mood, characterized by the dark, gloomy, and oppressive atmosphere that overshadows the narrator as he approaches and contemplates the House of Usher.