A) \[15.5\]
B) \[10.5\]
C) \[2.5\]
D) \[20.5\]
Correct Answer: C
Solution :
The term fine particles, or particulate matter \[2.5(P{{M}_{2.5}}),\]. refers to tiny particles or droplets in the air that are two and one half microns or less in width. Particles in the \[P{{M}_{2.5}}\] size range are able to travel deeply into the respiratory tract, reaching the lungs. Exposure to fine particles can cause short-term health effects such as eye. nose, throat and lung irritation, coughing, sneezing, runny nose and shortness of breath. Exposure to fine particles can also affect lung function and worsen medical conditions such as asthma and heart disease o
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