The correct answer to the question "Who among the following is the Chairman of the Fourteenth Finance Commission?" is option 2, Y.V. Reddy.

Option 1, Abhijit Sen, is not the correct answer. It is not Y.V. Reddy who is the Chairman of the Fourteenth Finance Commission.

Option 3, Amartya Sen, is not the correct answer. It is not Amartya Sen who is the Chairman of the Fourteenth Finance Commission.

Option 4, Montek Singh Ahluwalia, is not the correct answer. It is not Montek Singh Ahluwalia who is the Chairman of the Fourteenth Finance Commission.

The correct answer is option 2, Y.V. Reddy. Y.V. Reddy served as the Chairman of the Fourteenth Finance Commission. He was appointed to this position by the Government of India. The Fourteenth Finance Commission is a constitutional body responsible for making recommendations on the division of financial resources between the central government and the state governments in India.