Ask this in the physics area next time please, but turn to someone you trust or if your young an adult, like your parents or your teachers. Maybe even your friends. No matter what age tell someone and if they don't know then get medical help if they can't.
I'm positive that it's the larynx since; the pancreas is an organ behind the stomach, the hypothalamus is a part of the brain, and the thyroid is a part of the neck. The larynx is commonly known as your voice box, helps you speak. That's a part of your respiratory system.
The answer is number two which is Hyperactivity
