What is the biological limit of human life?

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Multiple Choice

What is the biological limit of human life?

Explanation:
The idea being tested is the upper bound of human longevity: the longest a person could theoretically live given biological limits. This is captured by maximum lifespan, which describes the ceiling of how long a human can live under normal biological conditions. It’s different from healthy life expectancy, which counts only the years lived in good health, and from life expectancy or average life expectancy, which describe the typical or expected years a newborn might live in a population. In practice, the observed extreme ages are around 120–125 years, with the widely cited example of 122 years at the longest, but the exact biological limit is a topic of ongoing study. The concept of maximum lifespan focuses on the ultimate limit, not the average or the healthy years people experience.

The idea being tested is the upper bound of human longevity: the longest a person could theoretically live given biological limits. This is captured by maximum lifespan, which describes the ceiling of how long a human can live under normal biological conditions. It’s different from healthy life expectancy, which counts only the years lived in good health, and from life expectancy or average life expectancy, which describe the typical or expected years a newborn might live in a population. In practice, the observed extreme ages are around 120–125 years, with the widely cited example of 122 years at the longest, but the exact biological limit is a topic of ongoing study. The concept of maximum lifespan focuses on the ultimate limit, not the average or the healthy years people experience.

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