Option b is the correct answer Balban, also known as Ghiyasuddin Balban, succeeded in finally breaking and destroying the power of Turkan-i-Chihalgani. Turkan-i-Chihalgani refers to the forty noble Turkish families who held considerable power and influence in the Delhi Sultanate. Important Tips Balban, whose full name was Ghiyas ud din Balban, was a powerful ruler of the Delhi Sultanate in the 13th century. He served as the Sultan from 1266 to 1287. Balban is known for his efforts to centralize and strengthen the authority of the Delhi Sultanate. Balban recognized the threat posed by the Turkan-iChihalgani and took decisive actions to break their power. He adopted a policy of suppressing the Turkish nobility and diminishing their influence. Balban reduced their privileges, curtailed their power, and sought to strengthen the authority of the Sultanate. He appointed loyal and capable officers from diverse backgrounds to key positions, ensuring that power was concentrated in the hands of the Sultan rather than the Turkish nobles. Balban also established a strong intelligence network to monitor and counter any potential threats from the nobility. Through these measures, Balban successfully broke the power of Turkan-i-Chihalgani and established the authority of the Sultanate.