Final answer:
The available choices do not correspond to the text provided, which does not mention a man removing a dog collar. The excerpts from Jack London instead discuss the dynamics between man and dog, and the man's struggles in the harsh environment of the Yukon.
Step-by-step explanation:
The passage in question does not specifically talk about a man removing a dog collar, so the provided multiple-choice options do not directly align with the content of the excerpt. Instead, the scenes from Jack London's writings explore the harsh realities of the Yukon setting, the relationship between man and dog, and the instinctual behaviors of both in extreme conditions. In London's narrative, the man's inability to remove his mittens and the dog's response to the man's impending death provide key insights into the nature of survival and companionship in the wilderness.
Contrasts between man and dog in this scenario show us a fundamental reliance on each other for survival and the stark differences in their abilities to adapt to the environment. The man's struggle against the cold and his need for the dog's company is juxtaposed with the dog's instincts and natural behaviors. The theme of man versus nature is underscored by the man's growing realization of his mortality and his helplessness in the face of the frozen wilderness.