Final Answer:
3) 42 percent of the total population in 1999 and 25 percent of 75-year-olds in 2016.
Step-by-step explanation:
To find the answer, compare the percentages for each option. Option 3 states that 42 percent of the total population exercised in 1999, and 25 percent of 75-year-olds exercised in 2016. This option represents the correct comparison as it aligns with the question's criteria. It's essential to note that the question asks for the comparison between the total population exercising in 1999 and the percentage of 75-year-olds exercising in 2016.
Examining other options, they do not match this specific criteria, making option 3 the accurate choice for the given exercise trends comparison.
Option 3 is the answer.