I would go with the author points out that the eyes reveal the essential characteristics of a person.
I believe the correct answer is B) diction, because diction is the choice of words. So, the more precise the words which the author uses are, the more precise and increased will the text be.
Mark can <u>use quotes from any book in his review</u> because it is allowed under <u>fair use</u>
Fair use allows for the critique of art but does not allow for large chunks of a book to be copied. Fair use also applies to motion picture media, as long as significant portions of the movie is not shown (but rather short clips instead).
You didnt provide us the information for the book..?