Are you all robots? If not give me proof

the answer is otpion c) understanding

he wants to be heard one more time. he wants to be understood. he needs the truth one more time.

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.