Answer:
Mary should choose a book by asking for a suggestion from a friend with similar interests.
Step-by-step explanation:
If Mary wants to read a book that she'll truly enjoy, she has to ask for suggestion from a friend of similar interests. For example, if Mary and her friend loves dogs, then her friend may suggest a book about taking care of dogs. This is Mary's interest as well, so she'll surely enjoy reading it.
A book that lists a lot of facts, doesn't necessarily mean it will spark Mary's attention. The facts might not be interesting for her. Having an attractive cover doesn't guarantee that the book is enjoyable to read as well. A book written long ago might not spark her interest too because we don't really know whether Mary loves classic books or modern ones.