I think it's he rarely mentions himself but goes into great details about others
I'm not sure if there were specific answer choices but using complex words actually makes your statement rather unclear, especially assuming they are words the average person wouldn't know or understand.
We can actually deduce here that the book that the author use in the passage is: Sibling relationships.
<h3>Who is an author?</h3>
An author is actually known to be a person who writes, publishes and sells the published book. Authors share their knowledge, expertise and experience through writing.
We see in the attached image the passage that completes the question.
Thus, the actual book the author used in this passage is that of sibling relationship.
Learn more about author on brainly.com/question/15816956
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Its false but i assume you already know it