Who had build the Sun Temple of Modhera?

The correct answer is B. Durlabharaja.

The Sun Temple of Modhera is a 11th-century Hindu temple dedicated to the Sun god Surya. It is located in the town of Modhera, Gujarat, India. The temple was built by the Chaulukya dynasty king Bhima I. The temple is a fine example of Chalukya architecture. It is built on a raised platform and has a rectangular plan. The temple has a shikhara (tower) that is 100 feet high. The temple is decorated with sculptures of Hindu gods and goddesses. The temple is a popular tourist destination.

Option A is incorrect because Vallabharaja was a 10th-century Chalukya king. He did not build the Sun Temple of Modhera.

Option C is incorrect because Bhima I was a 11th-century Chalukya king. He built the Sun Temple of Modhera.

Option D is incorrect because Karna was a character in the Mahabharata. He was not a historical figure.