Question 3

They should test because radon causes lung cancer.

Radon is a colorless, odorless gas that can accumulate in homes and is a known carcinogen that significantly increases the risk of lung cancer. Therefore, prospective buyers should be advised to test for radon to ensure the safety of their living environment.

A) it is unlikely radon would be a problem

This option is misleading as radon levels can vary significantly from one home to another, and it is not safe to assume that radon will not be a problem without testing. Ignoring the possibility of radon could lead to serious health risks.

B) non-smokers need not worry

This statement is incorrect because radon poses a health risk to all individuals, regardless of their smoking status. Non-smokers can still develop lung cancer as a result of prolonged radon exposure, making testing essential for everyone.

C) they should test because radon causes lung cancer

This option is correct as it directly addresses the health risks associated with radon exposure. Testing for radon is crucial because it is the second leading cause of lung cancer after smoking, and identifying high levels can lead to mitigation efforts.

D) they need not test because radon has an odor

This option is incorrect because radon is odorless and cannot be detected without proper testing. Relying on the belief that radon has an odor could lead to dangerous situations where high levels go undetected.

Conclusion

The recommendation to test for radon due to its association with lung cancer is critical for ensuring the health and safety of prospective buyers. All other options either downplay the risks associated with radon or provide incorrect information regarding its detection, emphasizing the importance of testing as a precautionary measure.