B. a sense of temptation and danger
The “feelings” one feels when reading literature or poetry is determined by the diction of the author. Mood/feelings can be influenced by use of figurative language. In this particular instance, the figurative language the author uses is simile—"coiled like serpents." Serpents (because of biblical connotations) will frequently reference temptation. And, a coiled serpent is a serpent that is ready/about to strike. Thus, one should be cautious of a coiled serpent. That said, the use simile in the first sentence provides a feeling of temptation as well as danger.