Teens usually don’t realize how addictive nicotine is, which is one
reason percent of adults began smoking in their teens.
a. 90
b. 50
c. 75
d. 25

A. 90 %

Explanation:

In 90% of cases of adult smokers started smoking in adolescence, from 13 to 15 years. In addition to the huge amount of money that the tobacco industry employs to induce people to smoke, especially relevant factors to stimulate the onset of cigarette smoking in adolescents may be: lack of awareness of nicotine addiction, presence of fellow smokers, especially if they are two or three years older. In addition, the presence of smoking parents is a relevant factor to start the addiction.