Answer:
D. "Their expression was one of mingled surprise and anger, together with the apparent determination to sell their lives as dearly as possible.
I still have a vivid picture of terribly gleaming teeth, bristling backs, and bulging muscles in savage readiness." provides the most convincing evidence for why climbing a tree might have been a poor choice for the author. This description suggests that the wolves were ferocious and willing to fight to protect themselves, which would make it dangerous for the author to try to escape by climbing a tree. The mention of the wolves' "terribly gleaming teeth" and "bulging muscles in savage readiness" further emphasizes their strength and ferocity, making it clear that they would be a formidable opponent for the author. Overall, this description paints a picture of the wolves as formidable predators that the author would be wise to avoid.
I hope this answer finds you well. In an effort to assist your understanding of the topic, I would like to provide you with an explanation. Please let me know if you have any questions or if there is anything else I can do to help.