50 points plus brainliest Which excerpt from The Call of the Wild best shows that Buck is entering into a new episode in his life?

And amid all this bursting, rending, throbbing of awakening life, under the blazing sun and through the soft-sighing breezes, like wayfarers to death, staggered the two men, the woman, and the huskies.
Buck made no effort. He lay quietly where he had fallen. The lash bit into him again and again, but he neither whined nor struggled. Several times Thornton started, as though to speak, but changed his mind.
This was the first time Buck had failed, in itself a sufficient reason to drive Hal into a rage. He exchanged the whip for the customary club. Buck refused to move under the rain of heavier blows which now fell upon him. Like his mates, he was barely able to get up, but, unlike them, he had made up his mind not to.
He was still limping slightly at the time he rescued Buck, but with the continued warm weather even the slight limp left him. And here, lying by the river bank through the long spring days, watching the running water, listening lazily to the songs of birds and the hum of nature, Buck slowly won back his strength.