I think it is D - supporting detail, just a guess tho
Answer: The main themes in The Boy in the Striped Pajamas are innocence, friendship, and human nature. Innocence: Bruno and Shmuel exhibit a childlike innocence. Bruno is largely ignorant of the horrors of the Holocaust, even when he becomes friends with a concentration camp inmate.
Explanation: Hope this helped!!!
I think b is the correct answer
The answer to my best knowledge is C.
I use to live in a house down by the river ?