Explanation:

- The Tendulkar Methodology is associated with estimating poverty in India.

- Developed by economist Suresh Tendulkar, it's aimed at updating poverty lines and measures in India.

- It emphasizes consumption-based benchmarks, including broader welfare indicators beyond mere income.

- The methodology considers diverse factors impacting poverty, such as health and education.

- Option 1: Unemployment - This relates to the rate or number of unemployed individuals, not what the Tendulkar Methodology focuses on.

- Option 2: Population size - Estimation of how many people live in an area is unrelated to Tendulkar’s work.

- Option 3: Poverty - The correct answer. Tendulkar’s work refines India’s poverty measurement approach.

- Option 4: National income - This covers the total economic value of a country's output, not relevant here.