The correct answer is: B. Siddharraj Solanki
Siddharraj Solanki was the founder of the Solanki dynasty in Gujarat. He was a powerful ruler who expanded his kingdom to include much of Gujarat and Rajasthan. He was also a patron of the arts and literature.
A. Karnadev Solanki was a ruler of the Solanki dynasty who ruled in the 11th century. He was the son of Mularaja I and the father of Siddharraj.
C. Mulraja Solanki was a ruler of the Solanki dynasty who ruled in the 10th century. He was the founder of the dynasty and the father of Karnadev.
D. Bhimdev I was a ruler of the Solanki dynasty who ruled in the 12th century. He was the son of Siddharraj and the grandson of Mularaja.