Who among the following is the ex-officio Chairman of the Rajya Sabha?

Correct option is C

The correct answer is option (c) Vice-President of India

• The Vice-President of India is the ex-officio Chairman of the Rajya Sabha (Council of States).
• In this role, the Vice-President presides over the sessions of the Rajya Sabha and ensures the smooth functioning of its proceedings.
  

Information Booster :-

•  Leader of Opposition :- The Leader of Opposition is an important member of the Rajya Sabha but does not serve as its Chairman.
  
•  President of India :- The President is not involved in the day-to-day functioning of Parliament and is not the Chairman of the Rajya Sabha.
  
•  Senior Member of Rajya Sabha :- Seniority in membership does not determine the chairmanship of the Rajya Sabha.