Answer:
b. Deaths from heart disease and stroke have been greatly reduced.
Step-by-step 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 leading 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 key factors in reducing the risk of death from heart disease.