A-this is your answer I HOPE I HELPED
I think that it’s asking for your opinion, but the most unbiased answer that I think I can give you is A. If there is a correct answer, please tell me so I can delve further into it.
A problem gives the story meaning and gives a more interesting plot.
I totally agree with this statement. It's an insecurity that many people have. People feel the need buy things just to impress other people. Like it doesn't make anyone better regardless of your status. Nice things are cool and all, but to most people; thats all they care about.
As with many children who experience trauma or loss of a close parent at an early age, Oskar has lost some of his childhood innocence, and expects the world of adults to be one of pain. Therefore, he closes himself off against it.