Which decision maker tends to be instinctive rather then practical when solving problems

is this a psat question, if so do not cheat try your best.

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.

i would think it's dendrites