Option b is the correct answer. After the Uzbeks were driven out of Samarkand in early 1501 CE, Muhammad Shaybani, a Uzbek leader, began to prepare for another attempt to take Samarkand in April -May 1501 CE. Babur, the Timurid leader, decided to meet this threat before it arrived at the city. The two armies met at Sar-ePul, where a decisive battle was fought which decided the fate of the Timurids and of the region. This battle was won by Uzbeks and Babur had to face the defeat. Important Tips Babur: Mughals belonged to a branch of the Turks called Chagatai. The Foundation of the Mughal Empire in India was laid by Babur, who was a Chagatai Turk. He was a descendant of Timur (on his father's side) and Genghis Khan (on his mother's side). His original name was Zahiruddin Muhammad. In 1494 at the age of 11, Babur became the ruler of Farghana (at present in Chinese Turkistan) succeeding his father Umar Shaikh Mirza after his death. He also lost Farghana to the Uzbegs. In 1504, Babur occupied Kabul. And in 1524, Babur occupied Lahore but had to retreat to Kabul after Daulat Khan Lodi turned against him.