Create your own cartoon of a negative feedback system of the respiratory system

i need

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.

whats the answer to your question?

it should be d) transitional fossils.

they show the gradualism of evolution throughout a period of time