You are presented with the question "What can be caused by secondhand smoke?" and the following answer choices: 
- clean air
 - fresh scent
 - Toxicity
 - Pollution
 - negative
 - lung cancer
 - healthy lungs
 - Dehydration

Now knowing that lung cancer is most often caused by exposure to tobacco smoke and secondhand smoke is also known as Environmental Tobacco Smoke, choose the best answer.


 

      lung cancer   