Answer:
The doc format is a computer file format for text documents
When Shmuel recounts his journey on the train, he describes a horrible situation, which was completely different from Bruno's experience on his train ride. Shmuel tells Bruno that the cars were overcrowded to the point that passengers could not breathe. In contrast, Bruno recalls that there were two trains at the station when he left Berlin and naively believes that Shmuel boarded the wrong train. Even though Shmuel tries to explain to Bruno that the train he boarded had no doors, Bruno contradicts Shmuel and does not understand why Shmuel had such a negative experience on the train. Bruno and Shmuel's different perspectives are significant because they depict the contrast between those in authority (Nazis) and those in subjugation (Jews). Since Bruno is a German Nazi, he is treated with respect and enjoys a relatively comfortable train ride. In contrast, the Jewish prisoners, like Shmuel, were subjected to the horrible conditions of the tightly packed cattle cars that took them to concentration camps. Their differing perspectives further illuminates the difference in their backgrounds and situations. Despite Bruno and Shmuel's drastically different circumstances, the two boys become close friends.
"The gold key is a pretty horrific symbol of the lengths the government will go to in order to brainwash children into enlisting in the military. They tell them that this key will get them into heaven if they die at war. This harkens back to ancient religious wars, like the Crusades, where dying a martyr was the best possible thing a boy could do. Although, in reality, all it means is that they died as pawns of the government.
This key is an especially repulsive symbol because it holds absolutely no intrinsic value—it's "a plastic key painted gold" (13.34). The Iranian military couldn't even give kids something of value to lure them into war, something they might be able to melt down for money. Of course, what value does money have to a martyr? You can't spend it when you're in the theoretical halls of heaven, with more virgins for the taking than you know what to do with."
A frame narrative is like a fake story so the answer is C
