(HELP) When he moaned and sobbed, it was with the pain of living that was of old the pain of his wild fathers, and the fear and mystery of the cold and dark that was to them fear and mystery. And that he should be stirred by it marked the completeness with which he harked back through the ages of fire and roof to the raw beginnings of life in the howling ages.

—The Call of the Wild,
Jack London

Which type of conflict does this passage illustrate?

character vs. character
character vs. self
character vs. nature
character vs. society