Which quote from To Build a Fire is an example of internal conflict?

In "To Build a Fire," London conveys the internal conflict, or mental struggle, through the protagonist's internal dialogue and thought processes:

"'No, no,' he shouted aloud. 'It is all madness. He must keep moving, keep moving.'"

This illustrates the character's internal conflict as he battles with his rationality, trying to convince himself that stopping to build a fire would spell disaster. He internally acknowledges that giving in to the impulse to build a fire would be a foolish and potentially fatal decision.