Which of these sentences from jack london's "the human drift" is an example of naturalist writing?

As we know naturalist writing is a literary genre that originated as a literary movement in the nineteenth century. It could be found in literature, film, theater and art. It was referred to as a type of extreme realism.

Naturalism suggests pessimism in a philosophical way using scientific techniques to depict human beings as objectives and impartial characters. It also concludes that natural forces are what determine character’s decisions.

C) In the misty younger world we catch glimpses of phantom races, rising, slaying, finding food, building rude civilizations, decaying, falling under the swords of stronger hands, and passing utterly away.

I hope it helps, Regards.