In "The Black Snake" the speaker feels sympathy for the snake once it is killed. He describes the snake as "<span>beautiful and quiet as a dead brother." This shows he actually cares about the snake as a creature.
In "A Narrow Fellow in the Grass" the speaker feels anxious about the snake. The dashes and the line breaks form pauses when read aloud and help create suspense in the poem.
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Because it gives them a sort of “authority” making others believe that they are the truthful ones and nobody else can be.
<span>The excerpt seems to be reflecting the viewpoint put forward in option a) It is hard for humans to evaluate events in terms of potential outcomes. For example, the line referring to the 'undistinguish'd seeds of good and ill' seems to insinuate that human beings are not able to work out which seeds will grow to be good or bad.</span>