How does knowing the authorial background of a text in understanding the text?

Knowing the authorial background helps see what the writer has experienced in life, so you can understand a little bit more about the character in the book.

the answer should be d) he was one of those young thousands who greeted the war with a certain amount of relief, welcoming the liberation from webs of tangled emotion" since it is the best option because it shows his desire to free himself. 

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