Answer:
The deterioration is due to A. Causes fluids to leak into the alveoli.
Step-by-step explanation:
Pneumonia is an infection which is caused due to entry of bacteria or fungi in the human respiratory system. When the disease gets into the lungs, inflammation causes air sacs, called alveoli, to be filled with liquid or discharge.
This can prompt breathing issues and cough with yellow or brown discharge. The development of liquid in and around the lungs prompts more complications.
The liquid that gathers in a single region is called an abscess. To treat such infection either antibiotics or minor operations are performed.