Which of the following series describe the correct pathway of oxygen in the breathing system? A. nose > bronchi > trachea > bronchioles > alveoli
B. nose > alveoli > bronchioles > bronchi > alveoli
C. nose > tranchea > bronchioles > bronchi > alveoli
D. nose > tranchea > bronchi > bromchioles > alveoli ​

Respiratory System:

Pathway of air: nasal cavities (or oral cavity) > pharynx > trachea > primary bronchi (right & left) > secondary bronchi > tertiary bronchi > bronchioles > alveoli (site of gas exchange)

the millers tale is the answer.

a gas, having a molecular weight of 13 kg/kmol and a kinematic viscosity of 0.25 cm2/s, flows through a pipe 0.25 m internal diameter and 5 km long at the rate of 0.4 m3/s and is delivered at atmospheric pressure.