The correct answer is: c) The expressions he uses add humor and lessen the tension that is building as the townspeople file in to exact their revenge on Huck and the others.
Huck's humorous observations about the townspeople's appearances and the smell of their belongings provide a comedic relief in a tense situation. His use of dialect and colorful descriptions reflects his naïve and humorous perspective, which adds levity to the scene, even as potential conflict looms.