The action of the speaker that can be considered ironic is that actually the speaker takes initiative of establishing the wall up to himself but then he questions it and has some doubts about that. There is another irony, I would say, the main one, you may find it useful : the wall which was meant to separate neighbours brings them together every year in order to repair it. Is it really the borderline?Hope that helps.
Part A: D New Yorkers rarely help each other or show concern when tragedy strikes
Answer:
The detail from to build a fire that helps develop a theme about dependence versus independence is "The man ignored the advice of one of the Yukon old-timers. "
Explanation:
This question is not complete, here are the options to answer the question:
A. The man warms his hands inside the dog's body.
B. The man builds a fire underneath a tree that is heavy with snow.
C. The man ignored the advice of one of the Yukon old-timers.
D. The man walks around the frozen creek
The theme of dependence versus independence is shown in this moment since the man does not want to accept that he depends on the help of others and goes on his journey as a demonstration of independence from other, which at the end led him to his death, making a big difference between the two war he could have taken.