Large urban areas that experience high levels of particulates in the air also tend to experience I. rates of respiratory illness above the national average. II. limited visibility. III. decreased water quality.

Rates of respiratory illness above the national average and limited visibility

Explanation:

Particulate matter deals with suspended particles in the air. The particles could be solid or liquid and they are usually as a result of pollution. They are mostly harmful and they include dust, smoke etc.

These harmful substances poses a greater risk of causing respiratory illnesses due to the harmful and poor quality of air inhaled. This damages the cells of the lungs gradually.

The suspended particles also makes visibility cloudy and low.

good question. i'll be looking into that. (this is a joke sir)

the correct answer is a