The phrase "There is a metric ton of books in my backpack" is an example of hyperbole. Hyperbole is an exaggerated statement that is not meant to be taken literally, used for emphasis or effect. In this case, it emphasizes that the backpack is very heavy or full of books, but it doesn't literally mean it weighs a metric ton.
So in your list:
- Simile: A comparison using "like" or "as".
- Hyperbole: The correct answer for the given phrase.
- Onomatopoeia: A word that imitates the sound it represents.
Let me know if you need more help with examples or explanations!