Answer:
The answer is B. Smoking is related to 30% of all cancer deaths in the United States.
Explanation:
Cigarette smoking causes 87 percent of lung cancer deaths and is responsible for most cancers of the larynx, oral cavity and pharynx, esophagus and bladder. Secondhand smoke is responsible for an estimated 3,000 lung cancer deaths among U.S. nonsmokers each year. Tobacco smoke contains thousands of chemical agents, including more than 60 substances that are known to cause cancer. The risk of developing smoking-related cancers, as well as non cancerous diseases, increases with total lifetime exposure to cigarette smoke. Smoking cessation has major and immediate health benefits, including decreasing the risk of lung and other cancers, heart attack, stroke and chronic lung disease.
Cigarette smoking alone is directly responsible for approximately 30 percent of all cancer deaths annually in the United States. Cigarette smoking also causes chronic lung disease (emphysema and chronic bronchitis), cardiovascular disease, stroke, and cataracts.
