Vrajeshwari fair is held at

The correct answer is: B. Chamba

The Vrajeshwari fair is held in Chamba district of Himachal Pradesh. It is a major tourist attraction and is held every year in the month of April. The fair is dedicated to the goddess Vrajeshwari, who is the presiding deity of Chamba. The fair is a major cultural event and features a number of traditional dances, music, and other performances. It is also a major shopping event, with a number of stalls selling local handicrafts and other items.

The other options are incorrect because:

• Kangra is a district in Himachal Pradesh, but the Vrajeshwari fair is not held there.
• Shimla is the capital of Himachal Pradesh, but the Vrajeshwari fair is not held there.
• Sirmaur is a district in Himachal Pradesh, but the Vrajeshwari fair is not held there.