Red red red red red red red
D is the best answer here. Its a complete sentence and doesn't seem chopped up or shoved into the story for extra words and detail.
The answer is D
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: