The challege Sara faces is that she had to decide whether or not to help the lady she saw on the trail, even though she was too scared.
Answer:a
Explanation i think it is it.
The hike to Castle Rock is stressful, but once Ralph and Jack scout it and determine there is no Beast, the remaining boys begin to distract and entertain themselves by pushing a large rock off the cliff into the water, foreshadowing the future use of that strategy to "defend" themselves.
As I see the author uses B:indirect characterization in the excerpt due to the definition of that technique.
