Kitab-ul-Hind, written by Alberuni, is called the “mirror of 11th-century India” because it accurately describes Indian society, religion, customs, sciences, geography and philosophy. Alberuni’s unbiased and scientific approach makes the book a reliable source for understanding India during Mahmud Ghaznavi’s era. It remains valuable for historians studying early medieval Indian culture and knowledge systems. ANSWER: (A) Kitab-ul-Hind