Question

the first paragraph of \ambush\ contains a conversation that takes place
before the narrator killed a man in vietnam.
before the birth of the narrator’s daughter.
after the narrator’s experiences in the vietnam war.
after the narrator told his daughter the truth about war.

Explanation:

"Ambush" by Tim O'Brien opens with a conversation between the narrator and his adult daughter, who asks if he ever killed anyone. This interaction happens long after the narrator's combat experiences in the Vietnam War. The other options are incorrect: the killing occurred during the war (before this conversation), the daughter is already grown so the conversation is after her birth, and the narrator has not yet told her the truth about the war in this opening exchange.

Answer:

after the narrator's experiences in the Vietnam War.