Question

which air pollutant has the most affect on people who have heart disease?
carbon monoxide
particulate matter
ozone
pollution

Explanation:

Particulate matter (PM) can enter the bloodstream, causing inflammation, oxidative stress, and affecting the cardiovascular system. For people with heart disease, PM exposure is linked to increased risk of heart attacks, arrhythmias, and other cardiac issues. Carbon monoxide affects oxygen transport but is less impactful on heart disease compared to PM. Ozone primarily affects the respiratory system. "Pollution" is a general term, not a specific pollutant.

Answer:

B. particulate matter