Answer:
She goes back to the website and checks the reviews of her favorite author for a self-help book.
Explanation: Data in the context above refers to acquired information, which are kept secure in a database which may be helpful in making future decisions or generating insights. In the selected phrase above, data about reviews from readers who have purchased a book or the other may view their feedback on how they feel about the books they've purchased and what they feel about the authors. These data from previous buyers will assist impending shoppers make data driven decision about an author and potentially use that to decide on the book to purchase.
