Final answer:
The narrator's use of expressive and evocative language in the excerpt from "America and I" creates a tone of melancholy, emphasizing feelings of sadness and guilt. The correct answer is option c.
Step-by-step explanation:
The word choice in the excerpt from "America and I" contributes to a tone of melancholy. The narrator's use of expressive language, such as 'deep sadness,' 'secret guilt,' and 'burning eagerness,' underscores a profound sense of sorrow and longing. This sadness stems from the contrast between the narrator's opportunities and the drudgery faced by others, which leads to a feeling of guilt even when engaging in beloved work.
Moreover, the reference to 'richness of the soul' being lost in America adds to the somber tone, suggesting a collective loss beyond individual struggles.