What percentage of adult deaths is attributed in part to smoking? a. 10% b. 20% c. 30% d. 40% select the best answer from the choices provided. a b c d

B

Explanation:

Smoking is a leading cause of lung diseases which is caused by nicotine and other chemicals that a smoker intake. Some adults commonly smoke when they are still teens and their nicotine level in their lungs will increase as the years passed by which accumulates to lung problems.