I love this book!
But I am not sure what you mean with your question (it's missing a verb).
But if you're looking for more information: The sense of guilt in this book is often created by other characters, when they're trying to come to terms with some tragedy (such as many characters being blamed for Sophie Mol's death). So in a way, guilt can function as an explanation. But also it's created by the social norms (as when Estha feels guilty because of the Orangedrink man).
Question 4 is C, and question 5 is B. Hope this helped. :)
Answer:
Chris McCandless, aka Alexander Supertramp, experiences various enlightening moments that unfold the main idea in the novel, "Into the Wild". Jon Krakauer clearly portrays this main idea of his novel: a young man attempts to find true happiness through solitude and nature, instead of finding it in society.
