Fear at first than a shift because the boy died and it shifts to sorrow and honer. When it says in the last paragraph stuff about the mast and helm, its them splitting apart forever:(
An argument is A I believe its correct.
You can never know you could of done something bad
I'm pretty sure it is Theme.
Theme is the central topic of the text. passage, story, or anything else. So it may possibly also be the same for the underlying meaning and universal truth...but again, I am not sure.