Explanation:

- Option 1: Poverty line

- Absolute poverty in India is commonly measured using a poverty line.

- The poverty line represents a monetary threshold below which people are considered to be in poverty.

- It accounts for minimum income needed to meet basic necessities like food, clothing, and shelter.

- Option 2: Education

- Education is crucial for improving living standards but is not directly used to measure absolute poverty.

- It influences poverty indirectly by improving income opportunities.

- Option 3: Health

- Health is a significant factor in quality of life but is not a direct measure of absolute poverty.

- Poor health can exacerbate poverty, but it's more an outcome than a measurement tool.

- Option 4: None of these

- This would mean absolute poverty isn't measured by any of the listed factors, which is incorrect.