The approximately time required to talk 1 km distance for a man is​ a)0.15min b)1.5min c)15min d)150min

it is a learned trait

explanation:

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.