Answer:
The correct answer is option D. lungs.
Explanation:
Bronchitis is an infection that cause inflammation in respiratory parts such as bronchial tubes. It is characterized by the coufh with mucus, wheezing, mild fever shortness of breath.
The starting point of the infection is throat that make it hard to breath and tightening of the chest also occurs in this infection. Bronchitis can be of two type acute and chronic.
Thus, the correct answer is option D. lungs.
