Hey there!
I do believe your answer is "To get the audience to understand whats going on."
Hope This Helped!
I would say the correct answer is B. primitive man.
The point of the entire novel is that Buck is fighting his urges to go to the wilderness and succumb to his wild identity of a wolf. Thus, dreaming about the primitive man clearly portrays his struggle between his two identities, that of a domesticated dog and that of a wild wolf.
Answer:
D. Rhyme
Explanation:
Since the bolded words are dreary and weary it seems like the best fit.