What information is presented as a fact in the article? Check all that apply.

The data cannot be studied in context.

It is difficult to tell if fluoride causes this cancer.

The sources diagnosing the cancer may be unreliable.

It is difficult to tell if fluoride causes this cancer.

Explanation:

The U.S. public health service has diverse team with more than 6500 employees. Their mission is to promote health and safety of the people of United States. The fluoride is added to drinking water since 1940s and this process is called water fluoridation. It is difficult to tell if the fluoride causes cancer but there has not been any relationship found between fluoridated water and cancer. Fluoridated water can reduce and reverse the tooth decay.

c. is the correct answer