Life expectancy is defined as:

Life expectancy is defined as:

• A. Number of births per year
• B. GDP per capita
• C. Average number of years a person is expected to live
• D. Age of retirement

Answer: (C)

Life expectancy measures how long people are living on average. It is the average number of years a person is expected to live, based on current mortality rates in a population. This statistic reflects health, nutrition, medical care, disease burdens, and overall living conditions. The other ideas describe different concepts: the number of births per year relates to fertility, GDP per capita is an economic indicator of average income, and retirement age refers to a policy or social norm about when people stop working. So the best description is the one that states the average number of years a person is expected to live.

Life expectancy measures how long people are living on average. It is the average number of years a person is expected to live, based on current mortality rates in a population. This statistic reflects health, nutrition, medical care, disease burdens, and overall living conditions. The other ideas describe different concepts: the number of births per year relates to fertility, GDP per capita is an economic indicator of average income, and retirement age refers to a policy or social norm about when people stop working. So the best description is the one that states the average number of years a person is expected to live.