Simile, compares the rocky peaks (mountain) to shark's teeth and uses "like" to compare which makes it different from a metaphor.
Your missing part of the question you don’t have that answer choices listed or the stanza that is being referred to in this question
Fear is a feeling, because YOU are feeling scared or frightened. An emotion is like being sad or mad, being frightened is YOU feeling it.
People follow the crowd because they tend to do that, doubt them self when everyone else has their own opinion. Also our brains get confused between what it sees and what others tell us.