I would go with B because I just took the test
C. Conformation Bias. If you need an explanation, please comment.
Answer:
b. Deaths from heart disease and stroke have been greatly reduced.
Explanation:
Since the 50's, there has been a more than half reduction in death rates from cardiovascular disease. Fighting these diseases was a priority because they were the <u>leading</u> cause of death at the time.
Dietary changes, reduced tobacco use and improvements in health care systems (for faster detection and more effective treatment) were <u>key factors</u> in reducing the risk of death from heart disease.
