<span>This line tells the reader that Mr. Bass has not understood how important the tree is to Gustus; the words vaguely remembered show that he hasn't paid much attention to the tree or to why Gustus cares about it so deeply. that it</span>
In would say the answer is B the closeness of human life because it shows even in suffering they care for one another.
i could answer but we dont know which passage you are talking about