B. Without Norgay's assistance on the climb, Hillary never would have reached the summit of Mount Everest by himself.
Explanation:
In this text, Edmund Hillary describes how he was able to reach the summit of Mount Everest. Moreover, he also tells us that he never would have been able to do so without the help of Tenzing Norgay. Norgay was a Nepali-Indian Sherpa mountaineer who accompanied Edmund Hillary on the climb. The two men were the first people to reach the summit of Mount Everest.
