What does Buck ultimately learn about his identity?

Buck's journey throughout "The Call of the Wild" leads him to a profound realization about his identity, particularly regarding his connection to the wild. As he faces various challenges and embraces his instincts, Buck discovers that his true nature is not defined by his previous life as a domesticated pet but rather by the primal instincts that emerge when he confronts the harsh realities of the wilderness. This transformation is a pivotal aspect of the narrative, illustrating the theme of survival and the inherent traits that connect him to his ancestral roots.

While the other options explore different facets of Buck's experience, they do not encapsulate the essence of his ultimate realization. Buck's servitude to humans is a temporary phase that he outgrows, and his perceived happiness in a domesticated life becomes increasingly hollow as he learns to thrive in the wild. Additionally, distancing himself from other animals is not consistent with his experiences, where connections with both animal and human characters are significant to his development. Instead, Buck's acceptance of his identity as a creature of the wild signifies his deepest understanding of who he is, embracing the call of his true nature.