The final narrative arc of the novel essentially focuses on the theme of:

the value of work

the quality of men

the effect of the environment

civilization vs. the wild

The title of the novel isn't mentioned in the question.

Explanation:

Even though there isn't a novel to analyze, there are some concepts that can be defined:

A novel is type of narrative characterized by its length and it is complex because it doesn't focus on one conflict but in many of them; a novel usually deals with human experience through a series of events that are related between them.

On the other hand, a narrative arc is a term used to describe the progression of a complete story: it refers to the different parts of the narrative, which usually begins calmly, then there is a peak, and finally the conflict is solved.