Read these sentences from "The Final Assault."

Still a little worried about my boots, I asked Tenzing to lead off. Always willing to do his share, and more than his share if necessary, Tenzing scrambled past me and tackled the slope.

In this short excerpt, the narrator gives an example of how important it is for climbers to help each other.
How does the narrator develop this concept in the rest of the narrative?
Question 9 options:


(A) by showing situations where one climber successfully assists another



(B) by showing how climbers traverse difficult passages



(C) by describing risky situations climbers encounter