The most accurate statement regarding the impact of public policy changes on smoking is:
• The dangers of smoking are well known by most people.
This reflects the success of public health campaigns and regulations that have raised awareness about the health risks associated with smoking and has contributed to a decline in smoking rates over the years. The other statements either contain inaccuracies or are not widely implemented policies (e.g., the legal age to purchase cigarettes varies by state, and there is still a recognized risk of illnesses from second-hand smoke).