To learn more about an author's diction, you ask: Are the sentences and paragraphs organized in an interesting way?
Do I like the connotation of the words the author has chosen to use?
What is the meaning and effect of the words the author has used?
What techniques has the author used that I can use in my writing?

the strategies is fictional storied

in the following paragraph, the fourth sentence the correct answer is: three personal subject pronouns

”she was embarrassed when she found that they had been put back on the shelves…”

a   subject pronoun is a personal pronoun. i, you, he, she it, we, they.  

in the sentence it can be observed she, used twice and they used once. is for this reason that is a three personal subject pronoun sentence.