Explanation

Researcher: Heavily Insulated homes trap radon gas much better than do poorly insulated homes. Therefore, those who live in heavily insulated homes are at greater risk for certain types of brain cancer because evidence shows that those who are being treated for brain cancer have high blood levels of the radioactive compounds that are found in those who are exposed to high levels of radon gas.

Question:

Which one of the following, if true, most underrates the researcher’s argument?

A. Exposure to radiation is known to Ice to an increased incidence of cancer of all kinds.

B. Young people are particularly susceptible to the negative consequences of high levels of radon exposure.

C. Radioactive compounds are used in many cases to help develop an initial diagnosis of medical

D. The most common brain cancer therapy involves radiation and I, cads, to high blood levels of many radioactive compounds

ND5-07-2023