Final answer:
Suspense is created through descriptions of the eye, heightened senses, and calculated actions of the narrator.
Explanation:
The author effectively builds suspense in the passage by:
- Describing the old man's eye in a haunting manner, creating a sense of unease.
- Revealing the narrator's acute sense of hearing, intensifying the tension as the heartbeat grows louder.
- Depicting the narrator's meticulous and calculated actions leading up to the climax of the murder.
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