I think that the element of the story that is least related tot he author's biographical story is the C. SMELL OF MILDEW IN A VIETNAMESE VILLAGE.
Tim O'brien wrote the story using his personal experiences. He was sent to Vietnam in his tour of duty. He's familiar with the geography of the Vietnamese coastline, he vividly describes the climate and landscape, and he feels the fear that the soldier felt during wartime.
If you need to know how many she had left then... 2/5 x 1/3 = 6/15. Sorry if I came out rude, but I hope I helped! Let me know if you need anything else!
Tone is created through word choice, sentence construction/ word order, and by what the viewpoint is focusing on.
