Answer:
Brian gets run over a moose and a tornado destroys his shelter, his weapons, and everything he worked hard on/for except his hatchet. At first he's angry, but then realizes that the hatchet is what he only had in the first place, and now he knows what he needs to do.
It is the point of view of a third person.
It affects the story because it allows the readers to know how the author feels towards the following and it also allows the readers to consider what he is thinking.
If you're talking about the poem by Edith M. Thomas then I believe that the central idea is about how people can base something off of their looks. I'm not completely sure, but it talks a lot about how they look dead, but then explain that they are not. To me that makes it sound a lot like the saying "don't judge a book by its cover".
It could also mean that things take time to grow into something beautiful, and before that happens, you have to go through something difficult, seeming as if it is the end of the world. But then you blossom and bloom and everybody will look in awe.
I'm not completely sure these are right, and I'm not sure we read the same poem, but you didn't state the author's name. This was just off the top of my head but I hope it helps you or gives you an idea :)
Answer: most likely the last option. soliloquys are typically used to showcase the internal state of a character, that is only known by the audience and not by other characters in a play. in this case, Hamlet is hard to understand, so his soliloquy allows us to see him as he is.
hope this helped!