I think the answer is A.) giving the readers clues about what is next to come:)
Answer:
Bilbo is having second thoughts about participating in the expedition
Explanation:
Is this chapter 1 when they have their first conversation together? Because if it is, Thorin does not believe Bilbo is the perfect theif they are looking for because of where he lives and because he is a boring hobbit. So Thorin discourages Bilbo and thinks he cannot do it. Now Bilbo feels like its an impossible mission he is going on and he gets really discouraged and has second thoughts.
