The answer is A. Smoking cigarettes
While most of these would cause a risk lung cancer, they are not voluntary. You can't control air pollution or a family history of lung cancer. However, you can control smoking cigarettes and you chose to smoke them so that would be a voluntary risk of getting lung cancer.
I hope this helped. Best of luck. Thanks for using Brainly!
<span>NO , Solid in Solid phase do not undergo thermal convection of heat transfer process .</span>
