The lungs are part of the respiratory system a) upper
b) lower
c) middle
d) quarter

Explanation:

The respiratory system involves the organs and functions that intervene in taking the oxygen, passing it to the blood, collecting the carbon dioxide and expeling it from the body.

The parts of the body that form the respiratory systems are:

Upper part:

Lower part:

Inside the lungs are the bronchial tubes/bronchi, the bronchioles, alveoli, and capillaries.

When you inhale, the air collected by the nasal cavity and the mouth pass through the pharyng and larynx (upper part) to the trachea, which enters into the lungs.

In the lungs, the bronchioles drive the air to the alveoli which are surrounded by the capillaries. It is through the capilaries that oxygen and carbon dioxide can pass to and from the blood.

answer; ///i do believe that the answer is (c) or ( believe its (c) is in its main sequence which will last billions of luck