Answer:
C. The narrator uses irony to suggest the prince is actually foolish.
Step-by-step explanation:
The word "sagacious" implies having or demonstrating wise judgement, knowledge, and foresight. In this case, by characterizing Prince Prospero as being "sagacious," the narrator is utilizing irony to signify that the prince's choice to sequester himself and his followers within a fortress during a pestilence is actually ill-advised and lacks sensible judgement. This irony implies reproach concerning the prince's decisions and accentuates the narrator's critical view on the narrative's occurrences. Consequently, the narrator is not completely impartial and unprejudiced.