Correct Answer: (a) Ramachandra dev
Solution:Ramchandra Dev was the ruler of Devagiri at the time of Alauddin Khalji's invasion. In 1296 A.D., the king of Devagiri, Ramchandra Dev after the successful invasion of Alauddin Khalji promised him to send the revenue from Ellichpur every year, but during 1305-1306 AD, he did not send the tax to Delhi. Consequnetly, Alauddin sent an army under the leadership of Malik Kafur to attack Devagiri in 1307. King Ramchandra Dev was defeated and surrendered. Malik Kafur looted Devagiri and took Ramchandra Dev including his relatives to Delhi. Alauddin behaved with dignity with Ramchandra Dev and gave him the title of "Rai Rayan' and sent him back to his state offering 1 lakh golden "Tankas' and 'Navsari" district. Malik Kafur had also led a campaign against Shankar Dev, the son of Ramchandra in 1312 AD.