The answer is: the <span>epiglottis .
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I am crossed between A B and D but i think A is the answer.
Peer pressure is the direct influence on people due to peers, or also the effect on an individual who gets encouraged to follow their peers by changing their attitude, values or their behaviors to given in to those who are influencing the group or individual.
I hope this helps!
Answer:A
Explanation:These are called Alveoli.They inflate when a person inhales and deflates when a person exhales. During gas exchange oxygen moves from the lungs to the bloodstream. At the same time carbon dioxide passes from the blood to the lungs.
