<span>'This living hand, now warm and capable' is an oddity amongst John Keats's poetry – indeed, amongst Romantic poetry in general. ... (Fittingly, Keats wrote 'This living hand' on a manuscript page of one of his unfinished poems.) The most likely date for the poem's composition is towards the end of 1819.</span><span>
</span>
Contrast: Insects may have entered a cool home and earthworms would have escaped to under the cool soil.
Compare: They both may have gone to a chilly area from their instincts.
The correct answer is A.
In this passage, the author creates suspense by describing a mysterious physical situation that could be a deadly trap. He is close to the edge of a large pit, so close that much of his head is hanging off the side. Poe creates suspense by the fact that the narrator close to the edge of a very deep pit.
Unpleasant details add to the sensory impact of the excerpt, but not its suspense. Furthermore, the narrator is confused in this excerpt, but not really fearful. He doesn't know enough about his current sitatuation to be afraid. Finally, the narrator becomes very quickly aware of the danger he's in -- he quickly realizes most of his head is hanging off the edge of the pit, a great danger indeed.
Therefore, Poe creates suspense by describing a mysterious physical situation that could be a deadly trap for the narrator.