What is the most important route of entry for pollutants in the work environment? I - Inhalation. II - Skin contact. III - Digestive. IV - Parente...

What is the most important route of entry for pollutants in the work environment?

I - Inhalation.
II - Skin contact.
III - Digestive.
IV - Parenteral.
a) Only I is correct.
b) Only II is correct.
c) Only I and II are correct.
d) Only I, II and III are correct.