Which one of the following is not correct as regards the harmful effects of particulate matter of the size 2.5 micro meters or less?

Options

(a) It can be inhaled into the lungs
(b) It can cause respiratory problems
(c) It can directly enter into our circulatory system
(d) It can cause inflammation and damage to the lungs

Correct Answer:

It can directly enter into our circulatory system

Explanation:

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