Question

when considering the risk of cell phone use, it is useful to compare the collective data from a confirmed cause of cancer, such as: cigarette smoke. diabetes. use of deodorant hypertension.

Explanation:

Cigarette smoke is a well - known carcinogen. Diabetes is a metabolic disorder, deodorant use is not a confirmed cancer - causing agent, and hypertension is a cardiovascular condition, none of which are directly related to cancer in the context of comparison as carcinogens.

Answer:

A. cigarette smoke