Hey there!
Here's what I'm thinking. We need to grab the reader's attention.
"Have you ever had a headache after looking at electronics so long? Would you prefer reading instead? If you say yes, you're just like so many students across America who would rather have textbooks over tablets."
If I read that, I would totally read on, and that's the sole purpose of a hook.
Hopefully this helps!
The answer is C. a polygon has three sides :)
