Answer : 4. "करौली"
Explanation :

One of the most venerated fairs of Rajasthan, the Kaila Devi fair is held at the temple of Kaila Devi in Karauli. The temple is situated on the banks of the river kalisi in karauli district of Rajasthan. Kaila Devi fair is held in Hindu month Chaitra which happens to be in March or April.