The correct answer is: a) Junagadh.
Junagadh is a district in the Indian state of Gujarat. It is located in the Saurashtra region of Gujarat. The district is known for its ancient inscriptions, which suggest a connection to the Vedic Age.
The oldest inscription found in Junagadh is the Rudradaman I inscription, which is dated to the 2nd century CE. The inscription is written in Prakrit and records the construction of a dam by the king Rudradaman I. The inscription also mentions the Vedic gods Indra and Varuna.
Another important inscription found in Junagadh is the Girnar Prashasti, which is dated to the 15th century CE. The inscription is written in Sanskrit and records the victory of the Gujarati king Kumarapala over the Chalukya king Jayasimha II. The inscription also mentions the Vedic god Vishnu.
The ancient inscriptions found in Junagadh provide evidence of the Vedic culture in the region. The inscriptions suggest that the Vedic gods were worshipped in Junagadh in the 2nd century CE and the 15th century CE.
The other options are incorrect because they are not districts in Gujarat.