Mammals breathe with the help of a diaphragm, and hiccups are caused by involuntary spasms of the diaphragm, the muscle beneath the lungs. Given these facts, mammals find breath through the action of what thing beneath their lungs among the following options:
- matter
 - the skin
 - muscle
 - organ
 - lmestone
 - oxygen
 - gas
 - Epidermis


 

   muscle      