Describe the moment Buck hears “the call.” What does it entail?

The moment Buck hears “the call,” it signifies a profound awakening within him, connecting him to his ancestral roots and primal instincts. This urge to return to the wild is a pivotal theme in the story, illustrating the conflict between civilization and the natural world. Buck feels an instinctual pull toward a life that embraces his true nature, which has been suppressed due to his domestic upbringing. This call represents not only a draw toward wilderness but also the instinct to survive and thrive in a world governed by the laws of nature, rather than the constraints of human society.

In contrast, the other options do not capture the depth of Buck's experience. The urge to attack other dogs, run away from humans, or leave Thornton's side does not encapsulate the transformative and instinctual pull towards nature that “the call” represents. Instead, the essence of “the call” is about Buck rediscovering his identity and the deep, instinctual connection to the wild that defines his true self.