Which of the following authorities in the capacity of holding that office as the primary duty is NOT...........

Indian Polity Others

Which of the following authorities, in the capacity of holding that office as the primary duty, is NOT appointed by the President of India?

Chairman, UPSC

Chief Election Commissioner of India

Chairman, NITI Aayog

All of the above are appointed by the President.

Option C: Prime Minister is the ex-officio chairman of NITI Aayog. So, C is incorrect. The NITI Aayog comprises the following:

The Prime Minister as the Chairperson.
A Governing Council composed of Chief Ministers of all the States and Union territories with Legislatures and lieutenant governors of Union Territories(except Delhi and Pondicherry)
Regional Councils composed of Chief Ministers of States and Lt. Governors of Union Territories in the region to address specific issues and contingencies impacting more than one state or a region.
Full-time organizational framework composed of a Vice-Chairperson, five full-time members, and some expert members