D is the answer since the paragraphs give a before and after type beat
<span>Postwar science fiction authors wrote to warn society of the potential results of its values, while beat generation authors wrote to reject society’s values. </span>
In "Cranes," just after Song-sam lets his friend escape, he hears a shot.
This is the moment when he becomes very worried about his friend, because he starts thinking that maybe that bullet ended up in his friend, hurting, or possibly killing him. He wants to find out what happened which is why he ventures forth.
In Tim O'Briens chapter good form, the narrator says he wants his readers to feel WHAT HE FELT.
Even though I haven't read the whole story, I think he is using the first person point of view in telling his story. This is because in using the first person point of view, readers will be able to put themselves in the narrator's shoes and experience what is happening in the story.
