Answer:
Man with weapons
Step-by-step explanation:
The main action of the story begins with Buck learning to fear man. His first lesson is that he must obey, because of the club and everything that it represents.
In the final pages of the novel, Buck overcomes that fear. Driven by rage, he discovers that he doesn't have to obey after all. "He had killed in the face of the law of club and fang" and now he is free. Although Buck knows to respect the weapons of man, they no longer compel him to give in completely.