Answer:
Based on the information provided, the narration as a whole can be described as unreliable because the narrator conveys a changing, subjective experience. The other options ("unreliable because the narrator does not reveal why she is upset" and "unreliable because the narrator omits thoughts about the origins of the mark") could also be correct, depending on the specific details of the story. However, the options "reliable because the narrator provides a precise description of the mark" and "reliable because the narrator includes a variety of perspectives" do not accurately describe an unreliable narrator