Correct Answer: (c) Udaipur
Note: The princely state which were part of the Rajasthan Union formed on 25th March, 1948 are Kota, Bundi, Jhalawar, Tonk, Dungarpur, Banswara, Pratapgarh, Kishangarh and Shahpura. Udaipur became a part of Rajasthan Union in its third phase of unification on 18 April, 1948.