From my my experience this usually differs depending on the type of book it is, but I think the best choice is either A, to help the reader understand new concepts, or C., It allows the reader to focus on key ideas and information during the reading. I'd pick C though, since it's more in depth and makes more sense.
B. doesn't make that much sense unless the book is an argumentative or a persuasive book.
D. only applies to personal narratives. Nobody can understand a writer's personal experiences and attitudes otherwise.
I think it is C. A man but i am not so sure
It is B because the other answers can’t be it
I’m not sure what this means, could you give more information about the question or passage or whatever?
To modify a plural noun that ends in 's' to show possession you should add an apostrophe (') after
the s.
Example: The Johnsons' house is beautiful.
Hope this helps! If you need anymore help or further explanation just let me know!! :)