Answer : 2. "अलाउद्दीन खिलजी"
Explanation :

Alauddin Khilji was an ambitious ruler whose ambition was to become like Alexander and ruled over the world. Therefore he called himself the second Alexander. He annexed Gujarat (1299), Ranthambore (1301), Chittor (1303) and South India (1307-1311) in order to fulfil his ambition.