Question

aging populations can be a problem for developed countries because
there are fewer younger workers coming into the workforce.
many older people are skilled in manufacturing, not technology.
most older workers demand top - level pay and full benefits.
younger workers cannot find jobs when older people work longer.

Explanation:

To determine why aging populations are a problem for developed countries, we analyze each option:

• Option 1 ("there are fewer younger workers coming into the workforce"): Aging populations mean a larger proportion of older people and fewer young people entering the workforce. This creates a strain as there are fewer workers to support the economy, fund social programs, and replace retiring workers. This is a core issue with aging populations (declining workforce participation from younger cohorts).
• Option 2 ("younger workers cannot find jobs when older people work longer"): While this can be a secondary effect, it is not the primary reason aging populations are a problem. The main issue is the overall reduction in the working - age (younger) population, not just job competition.
• Option 3 ("many older people are skilled in manufacturing, not technology"): The skill mismatch is a separate issue and not the fundamental reason aging populations are a problem. The key is the size of the workforce, not the skill set of older workers.
• Option 4 ("most older workers demand top - level pay and full benefits"): While compensation for older workers can be a factor, the primary problem with aging populations is the shrinking of the younger workforce, which has a more far - reaching impact on economic productivity, social security, etc.

Answer:

The correct option is the one with the text "there are fewer younger workers coming into the workforce." (Assuming the options are presented in the order: 1. there are fewer younger workers coming into the workforce; 2. younger workers cannot find jobs when older people work longer; 3. many older people are skilled in manufacturing, not technology; 4. most older workers demand top - level pay and full benefits. If we use a numbering system for the boxes from top to bottom as 4, 2, 1, 3, then the correct box is the third one from the top (box with "there are fewer younger workers coming into the workforce")).