Final answer:
White Fang is disturbed and confused by his mother's submissive behavior towards the man, which contradicts her usual fearless nature.
Step-by-step explanation:
From the given excerpt, it is clear that White Fang's perspective is one of confusion and shock at his mother's submissive behavior toward the man. White Fang is disturbed by what he sees as a contradiction to his mother's usual fearless demeanor. The cub's instinct had marked the man as an authoritative figure, and his mother's actions serve only to reinforce this perception, leaving White Fang appalled at her submission. This unexpected behavior shatters the cub's understanding of his world, highlighting the power hierarchy between animals and humans, and the imprinting of man's authority over the wild.