Which statement about life expectancy is accurate?

• A. Life expectancy is the average expected lifespan influenced by multiple factors including genetics, lifestyle, healthcare, SES, and environment.
• B. Life expectancy is the maximum lifespan possible for a species; influenced by random chance only.
• C. Life expectancy is determined solely by genetics.
• D. Life expectancy is the age at which everyone dies.

Answer: (A)

Life expectancy is the average number of years a group of people is expected to live based on current mortality patterns. It’s shaped by a range of factors, including genetics, lifestyle choices (like diet, exercise, smoking, and alcohol use), access to healthcare and preventive services, socioeconomic conditions (income and education), and the surrounding environment (pollution, safety, housing). Because it reflects how these influences combine to affect deaths in a population, it can rise or fall with changes in public health, medical advances, and living conditions, and it can vary across different communities and time periods. It’s not the maximum possible lifespan for a species, nor is it determined solely by genetics, and it doesn’t represent the age at which everyone dies.