When does a large working-age share in the age structure become a real economic advantage?

Correct answer: When adequate education, skills, and jobs are available

A large working-age population is not automatically an economic advantage. People of working age must be healthy, educated, and equipped with useful skills, and the economy must provide enough productive and fairly accessible jobs. When these conditions exist, more workers can raise production, savings, tax revenue, and support for dependent groups. This potential benefit is often called a demographic dividend, but it requires effective policies and institutions rather than age structure alone.

Option A gives the necessary conditions. If jobs are unavailable, a large working-age group may face unemployment, insecure work, or social pressure instead of generating growth. Reducing investment in health and education would weaken productivity, not improve it. Increasing dependent groups would raise the burden on workers. Thus education, skills, health, and employment must work together before a large working-age share becomes a real economic advantage.