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3. Which of the following correctly traces the pathway of
oxygen in the breathing system?*
A. nasal passage--bronchi-trachea-alveoli-bronchioles
B. nasal passage--bronchi--trachea--bronchioles-alveoli
C. nasal passage--trachea--bronchi--bronchioles-alveoli-
D. nasal passage-trachea-bronchioles-alveoli-bronchi​