Reading "Letter to His Father" helps the reader better understand The Metamorphosis by providing:
A. insight into the relationship between Gregor and his father.
"Letter to His Father" is a letter written by Franz to his father. The letter is depressing, and he says that due to his father, he is unable to start a family, and he does not want to become a father.
The letter shows the relationship between Franz and his father, which was not good.
Thus, the correct option is A. insight into the relationship between Gregor and his father.
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