It seems to be called a Story within story, which is when a character within the lager story narrates a story of their own. I hope that wasn't to cofusing.It was all I could find.
C. & D.
He killed himself because he could no longer tolerate the horrors of war, his own psychological abilities to deal with the horrors had turned on himself, so that he took his own life. And unlike a normal situation in life, the war had made it so that life and meaning were no longer relevant. They did not recognize the value of his life dead or alive, demonstrating another mental loss in the psychology of warfare.
Answer: It's the last answer.
Explanation: Because, the words in the passage connect to that answer.
