Did I understand it is the correct answer
Answer:
The narrator was walking to the tram line to board a tram car. On the way he saw a white boy and a black boy playing an unusual game. The white was around four and the other probably five. The game they played pained the narrator because the white boy was giving orders to the black boy who obeyed him like a slave.
Answer: I believe it would be letter (b)
Explanation: I had to answer this question yesterday and I am pretty sure this is the answer. Because it asks ¨the narrator gives an example of why oxygen is vital to climbers on Mt. Everest. How does the narrator develop this concept in the rest of the narrative?¨ so this is really the only plausible answer regarding the question.