Here's why:
* Onomatopoeia: Words that imitate the sound they describe. "Slurp" directly mimics the sound of someone drinking something noisily.
Let's break down why it's not the other options:
* Metaphor: A figure of speech that compares two unlike things without using "like" or "as." "Slurp" doesn't make a comparison.
* Simile: A figure of speech that compares two unlike things using "like" or "as." "Slurp" doesn't use these connectors.
Let me know if you'd like more examples of onomatopoeia!