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.
1.D an insult
2.B carry a grudge
3. D They will be executed
The answer is D. Lahiri want's to bring attention to how much cultural tension there is between an Indian transfer student and a typical American school. In this example the conflict isn't between the child and the teacher: but the communication barrier they have over his name.