Answer : 3. "महाराष्ट्र"
Explanation :

1. This type of saree is named after the Paithan city of Aurangabad Maharashtra state where they are hand woven.

2. They are made of the very finest silk and hence they are the most expensive sarees in India.

3. It is named after the Paithan village in which it is woven. There is zari (gold or silver) work in the saree.