Radon Is an Odorless Radioactive Gas That You Cannot Taste

Radon is an odorless radioactive gas that you cannot taste or see.Exposure to this naturally occurring gas can be dangerously high in any home in North America.Homes must be specially tested for exposure levels for residents to understand their risks.If risks are high,venting systems can be installed to significantly lower indoor levels of exposure.The most likely health problem associated with long-term exposure to this radioactive gas is

A) a stroke or heart attack.
B) lung cancer.
C) elevated blood pressure.
D) obesity leading to diabetes.