103.
They took a long time to finish the work because
We started pitching the highest camp that has ever been made. Everything took five times as long as it would have taken in a place where was enough air to breathe; but at last we got the tent up, ยท and when we crawled in, it was not too bad. There was only a light wind, and inside it was not too cold for us to take of our gloves. At night most clamberers take off their boots; but I preferred to keep them on. Hillary, on the other hand, took his off and laid them next to his sleeping bag.
A:
They were very tired
B:
There was not enough air to breathe
C:
It was very cold
D:
It was very dark
The answer is:
B
