You are presented with the question "What is lung cancer a consequence of?" and the following answer choices: 
- candy cigarettes
 - harmful substances
 - Greenhouse gases
 - malnutrition
 - water vapors
 - metabolic reaction
 - tobacco fumes
 - Pesticides

Now knowing that lung cancer is most often caused by exposure to tobacco smoke and lung cancer for most is the consequence of smoking, choose the best answer.


 

       tobacco fumes  