A) Smoking is a major factor in cancer and heart disease.
Explanation:
The <u>first report </u>on general US smoking was directed by surgeon<u> Luther Terry </u>with the help of an advisor, the <u>historical report of 1964</u> related to smoking cigarettes with dangerous health effects, including lung cancer and heart disease. As a reaction, the <em>United States Congress adopted the Federal Cigarette Labeling</em> and <em>Advertising Act of 1965 and the Cigarette Smoking Law of 1969.</em>
The American Heart Association recommends exercising with a target heart rate of 50 to 75 percent of your maximum heart rate for beginners, and for moderately intense exercise. You can work at 70 to 85 percent of your maximum heart rate during vigorous activity.