Answer : 2. "अलमसूदी"
Explanation :

Alamsoodi 'Alamsoodi' was a scholar and prominent geographer of Arabia. In 915-916 AD, he was a foreign traveler of Baghdad traveling to India. Alamsudi was born in Baghdad in the late 9th century. Probably, Alamsudi came to Gujarat during the reign of Mahipala (910-940 AD), the ruler of Gurjara Pratihara dynasty. He called the Gurjar Pratiharas as 'Algurjar' and the king as 'Baura'.