The narrator describes that "the doors swinging open to reveal Madeline" are the superhuman energy that had been found. So, option (a) is the correct answer.
<h3>What is the narrator describing?</h3>
This passage from Edgar Allan Poe's "The Fall of the House of Usher" portrays the moment when Roderick Usher and the narrator understand that they have buried Lady Madeline alive and that she is now unlocking the door to the room where they are.
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