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1.how will you describe the pathway of oxygen in the breathing system?

a. From the nose and mouth, oxygen travels to the trachea, bronchi, bronchioles, and then into the Alveoli.
b. From the nose and mouth, oxygen travels to the bronchioles, down to the trachea then to the alveoli.
c. From the nose and mouth,oxygen travels to the trachea,to the alveoli,bronchi, and then into the bronchioles.
d. All of these​