Answer:
You could probably figure out that the boys in the story are English schoolboys, and were more than likely being evacuated from their home country to escape the possibility of atomic warfare. (Does this help?)
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.
Gradpoint answer
Your personality changes throughout grade school makes the most sense since an autobiography is about that person by that person and that's the most personal topic.
Based on Anton Chekhov's background, he was a very philanthropical person. He pursued the career of writing in order to get his family out of poverty. His experiences during his life, were portrayed by the lawer in his story, "The Bet." Like the lawyer, Anton Chekov decided to devote his life to what he always believed, and he values experiences in life more than the material gains.