10% of high school students who had ever tried e-cigarettes, in 2012. Thus, the correct option is C.
What is smoking?
Smoking is the act of inhaling and exhaling the fumes of burning plant material. A variety of plant materials are smoked, including marijuana and hashish, but the act is most commonly associated with tobacco as smoked in a cigarette, cigar, or pipe.
Smoking causes cancer, heart disease, lung diseases, stroke, diabetes, and chronic obstructive pulmonary disease which includes emphysema and chronic bronchitis. Smoking also increases risk for tuberculosis, certain eye diseases, and problems of the immune system, including rheumatoid arthritis.
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