Let's analyze the percentages of Americans aged 65 and older provided for different years:
- In 1900, 4% of the population was aged 65 and older.
- In 1950, 8.2% of the population was aged 65 and older.
- In 2000, 12.4% of the population was aged 65 and older.
- In 2050, it is projected that 20.2% of the population will be aged 65 and older.
To comprehend the implications of this data, observe the trend: the percentage of older adults in the population is increasing steadily over time.
Step-by-step analysis:
1. 1900 to 1950:
- In 1900, 4% of the population was aged 65 and above.
- By 1950, this percentage had more than doubled to 8.2%.
2. 1950 to 2000:
- From 1950 to 2000, the percentage again increased significantly from 8.2% to 12.4%.
3. 2000 to 2050:
- The projection for 2050 shows a continued increase to 20.2%, almost doubling the percentage from 2000.
From these observations, the consistent rise in the percentage of older adults suggests that more people are living longer over time. This phenomenon usually points toward advancements in healthcare, better living conditions, improved medical treatments, and potentially healthier lifestyles, all contributing to an increase in life expectancy.
Given the four options:
A. The poverty level is decreasing.
- The data provided does not directly indicate changes in poverty levels.
B. Life expectancy is increasing.
- The increasing proportion of older adults suggests an increase in life expectancy, meaning more people are living longer.
C. Average income is decreasing.
- There is no data here that relates directly to the average income levels.
D. The population is increasing.
- While it's possible that the overall population is increasing, this specific data set focuses on the proportion of older adults rather than the total population count.
Conclusion:
The correct inference from the given data is that life expectancy is increasing. Therefore, the correct answer is:
B. Life expectancy is increasing.
