Explanation:

- The correct option refers to Amartya Sen, who developed the Sen Index to measure poverty quantitatively and qualitatively by considering both income distribution and welfare of individuals.

- Option:1 - Amatya: This seems to be a misspelling or confusion with Amartya Sen's name and is not the correct choice.

- Option:2 - Amartya: This is the correct option. Amartya Sen is renowned for his contributions to welfare economics and developing the multidimensional poverty index.

- Option:3 - Atmay: This does not refer to any known economist related to the Sen Index.

- Option:4 - None of the above: This is incorrect as Amartya is the right answer.

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