Explanation: Federal laws and policies for tobacco use will regulate the business around it. To make people use less tobacco products, or not use them.
The main purpose could probably be towards public health, because the investment that government has to make to treat tobacco related diseases is high.
Health is considered as a combination of multi dimensional characteristics because it encompasses physical fitness, mental alertness and social adaptability.
In a study, the independent variable is the thing that you change to see how the change produces different results. In this study, the independent variable would be the use of nicotine.
