Correct Answer: (b) 2, 3, 1, 4
Solution:During 999-1027 A.D. Mahmud Ghaznavi attacked India for 17 times. Muhammad Ghori's first attack occurred in 1175 A.D. and then he attacked again and again to expand his empire till 1205 A.D. The fear of Genghis (Changiz) Khan's attack haunted India when he was chasing son of the fugitive ruler of Khwarizm Shah, Jalaluddin Mingburni in 1221 A.D, Taimur attack India in 1398 A.D.