i think the answer would be a preposition because it is used before a noun
Answer:
Hook the reader.
Tell a story about the reader's current pain.
Tell a story about the reader's potential pleasure.
Tell them what they'll learn.
Describe the author's background/origin of book.
Set up the book with a call to action.
Explanation:
Hope this helps!
The past perfect refers to a time earlier than before now. It is used to make it clear that one event happened before another in the past. It does not matter which event is mentioned first - the tense makes it clear which one happened first.