Researchers have found that environmental tobacco smoke:

Question

Quizplus · Accepted Answer

Studies have shown that nonsmokers who are regularly exposed to environmental tobacco smoke in confined spaces with heavy smokers, such as carpooling or working in smoke-filled environments, are at increased risk for lung cancer and other respiratory diseases. This is because they are exposed to high concentrations of hazardous chemicals and carcinogens found in cigarette smoke. The other choices are not supported by current research.

Researchers Have Found That Environmental Tobacco Smoke