The correct answer is: b) Chudasamas of Junagadh.
The Chudasamas were a Rajput dynasty that ruled the Saurashtra region of Gujarat from the 11th to the 13th centuries. They were founded by Chudasama, a descendant of the Parmara Rajputs of Malwa. The Chudasamas were initially vassals of the Chaulukya dynasty of Gujarat, but they later became independent. They reached the height of their power under Mularaja II, who ruled from 1172 to 1178. Mularaja II was a successful military commander who defeated the Chalukyas of Gujarat and the Yadavas of Devagiri. He also built a number of temples and forts in Saurashtra.
The Chudasamas declined in power after the death of Mularaja II. They were eventually overthrown by the Vaghela dynasty of Gujarat in the 13th century.
The other options are incorrect. The Parmaras of Malwa ruled the Malwa region of central India. The Chahamanas of Jalor ruled the Jalor region of Rajasthan. The Guhilas of Mewar ruled the Mewar region of Rajasthan.