What does Buck ultimately seek by the end of the story?

By the end of "The Call of the Wild," Buck's journey leads him to a profound transformation where he seeks to fully reconnect with his wild instincts. Throughout the story, Buck evolves from a domesticated pet into a powerful creature of the wild. His experiences in the Yukon wilderness force him to adapt and rely on his primal instincts for survival, which he discovers are deeply ingrained within him.

As he encounters challenges and confronts both nature and his own capabilities, Buck embraces his latent instincts, ultimately answering the call of the wild. This pursuit of freedom and self-realization is epitomized in his final choices, where he answers the call of the wolf pack and finds his true place in the natural world. The other options suggest a longing for human companionship or a return to civilization, which conflict with Buck's development and the themes of the story centered on nature, survival, and instinct.