Final answer:
The detail that most clearly creates tension in 'The Monkey's Paw' is Mr. Morris telling the Whites about the man who wished for his own death.
Step-by-step explanation:
The detail from 'The Monkey's Paw' that most clearly helps create tension is Mr. Morris telling the Whites of the man who wished for his own death. This detail foreshadows the potential consequences of using the monkey's paw and builds anticipation for what might happen to the characters. By sharing a disturbing story, Mr. Morris adds an ominous atmosphere to the narrative, heightening the sense of tension.
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