Final answer:
The life expectancy for older adults would be increased the most if cardiovascular and kidney diseases could be eliminated. Correct option is D.
Step-by-step explanation:
The life expectancy for older adults (65- to 75-year-olds) would be increased the most if cardiovascular and kidney diseases could be eliminated.
According to the information provided, cardiovascular diseases are a major cause of death globally. Modifying risk factors through medications and behavioral changes could help prevent most cases of cardiovascular disease.