The correct answer is option - Respiratory system.
Explanation:
Bronchitis is an respiratory system illness that affects various organs of the respiratory system. It is inflammation of the bronchial tubes. These tubes are carry air to lungs of an individual.
Bronchitis can cause wheezing, short breath, mild fever and chest congestion. The bronchitis can be acute bronchitis or the chronic bronchitis.
Thus, the correct answer is option- Respiratory system.
