Question

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Explanation:

The excerpt uses first-person narration (the narrator uses "I" throughout) and the narrator is unreliable: they claim to be "healthy" and "calm" while describing clearly unstable, violent behavior, and their perception of sounds (like the old man's heartbeat) is distorted by their paranoia, making their account untrustworthy.

Answer:

The excerpt uses a first person point of view and an unreliable narrator