Which factor has NOT contributed to a decline in the number of young adolescent smokers in the United States?

Question

Quizplus · Accepted Answer

The legal smoking age has actually contributed to a decline in the number of young adolescent smokers, making it more difficult for them to legally purchase tobacco products. The other factors listed (higher cigarette prices, warnings printed on tobacco products, and better law enforcement of tobacco sales) have all contributed to the decline in young adolescent smoking.

Which Factor Has NOT Contributed to a Decline in the Number