Read the following excerpt from The First Men in the Moon.
We crawled through stony ravines, over snow slopes, amidst fungi that ripped like thin bladders at our thrust, emitting a watery humour, over a perfect pavement of things like puff-balls, and beneath interminable thickets of scrub. And ever more helplessly our eyes sought for our abandoned sphere.
The above excerpt is an example of ________________.
man vs. man
man vs. nature
man vs. self
man vs. society