Which description best distinguishes active smoking from passive smoking?

### Why this is right The distinction is based on how exposure occurs: an active smoker intentionally inhales tobacco smoke, while a passive smoker breathes smoke produced by someone else. The material states that both groups inhale many of the same harmful components. ### The concept Passive smoking is also called secondhand smoke exposure. It can occur when smoke from cigarettes, cigars, or pipes is present in a shared environment. The person exposed does not have to choose to smoke for smoke toxins to reach the respiratory system. This is why reducing exposure in homes, workplaces, and public spaces is a prevention measure. ### The other options - **B. Active smoking occurs only outdoors; passive smoking occurs only indoors.** The setting does not define either term; exposure can occur in different places. - **C. Active smoking exposes the lungs to toxins; passive smoking does not.** Passive smoke also contains harmful components. - **D. Active smoking involves nicotine; passive smoking contains no nicotine.** The supplied material says passive smokers inhale smoke containing nicotine. ### Terms - **Secondhand smoke**: Smoke from other people's tobacco use that a non-smoker involuntarily breathes. - **Tobacco smoke**: The smoke produced by burning tobacco products. ### Remember Active and passive smoking differ in whether the inhalation is intentional, not in whether smoke can contain harmful substances.