PATHOLOGY

Detailed explanation-1: -The narrator begins to feel uncomfortable and notices a ringing in their ears. As the ringing grows louder, the narrator concludes that it is the heartbeat of the old man coming from under the floorboards. The sound increases steadily to the narrator, though the officers do not seem to hear it.

Detailed explanation-2: -The first paragraph foreshadows that the sense of hearing and the supernatural will play a key role in the plot development, especially when the narrator’s sanity melts down as he ‘’hears” the beating of a dead man’s heart.