Answer : 4. "जयपुर"
Explanation :

1. Sawai Ram Singh II of Jaipur patronized Blue Pottery.

2. Blue pottery is widely recognized as a traditional craft of Jaipur.

3. It is originally from Turko-Persian.

4. This art came to Lahore from Persia during the reign of Akbar.

5. After this Ram Singh I brought it from Lahore to Jaipur. However, the greatest development of this art took place during the reign of Ram Sawai Singh II.

6. He sent Churaman and Kaluram potters to Delhi to learn this art.