According to the American Cancer Society, which one of the following factors poses the greatest risk for developing cancers?
a. Poor diet
b. Tobacco
c. Pollutants
d. Asbestos

Respuesta :

The correct answer is B. According to the American Cancer Society, tobacco poses the greatest risk for developing cancers. It was estimated that there is a 22% deaths per year due to cancer caused by tobacco use. During 2004, about 1.6 million deaths were recorded due to cancer.