Which of the following is the safest level of exposure to secondhand smoke? a. often b. monthly c. never d. rarely select the best answer from the choices provided.

C. never

Explanation:

Second-hand smoke is the inhalation of smoke from tobacco products, such as cigarettes, cigar, cigarillos, pipe, hookah and other smoke producers, by non-smokers who live with smokers indoors breathing the same toxic substances as the smoker. inhale. Second-hand smoke is never safe because of the toxicity of smoke, so people should always avoid exposure to secondhand smoke.

Cigarette smoke is a mixture of approximately 4,720 different toxic substances consisting of two fundamental phases: particulate and gaseous. The gas phase is composed, among others, of carbon monoxide, ammonia, ketones, formaldehyde, acetaldehyde, acrolein. The particulate phase contains nicotine and tar.