The selection sentence that best illustrates the author's main point is that the rising death count provides the counterpoint: there are places that humans simply cannot tame, as shown in the second answer option.
We can arrive at this answer because:
With this, the author shows that even though climbing Mount Everest is an exciting activity, there are places that human beings will never be able to completely conquer because the force of nature in those places is stronger than anything else.
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