Where are stomata located? A. The bottom roots of the Leaves
B. The roots
C. the top of the leaves
D. The stems

They are located at the bottom of leaves.

So your answer is A

Heres a picture of the somata :

i would say it is

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.