Answer:
That they would fail without the book. They are not studying because they can just use a book to cheat.
Explanation:
The tone would be determined by the kind of people the author is writing for. A story for children is going to have a different tone than a graduate thesis even if they are on the same topic.
Hope that helps.
"<span><span>Now, Tybalt, take the villain back again,That late thou gavest me; for Mercutio's soul Is but a little way above our heads, Staying for thine to keep him company: Either thou, or I, or both, must go with him.</span>"</span>
Answer:
I am pretty sure that it is D