Answer:
I have a feeling its D. I tried to search it but it seems that it wouldnt tell me. Im sorry if this was wrong. im was really trying to help.
The main point of the excerpt is that readers should be aware of the damage that the war has done to a generation of men who were impacted by it, and read the book with this idea in mind.
The epigraph wants to make sure that readers who approach this book do it with the same purpose as the one with which the author wrote it. He does not want the readers to think of this book as an accusation, a confession or an adventure.
<span>They used flooded rivers for crops for rich silt left behind</span>