Concept:The Turk rule in Bihar was established by the military general who first conquered and controlled the region for the Delhi Sultanate.
Explanation:Mohammad Bin Bakhtiyar Khilji (also known as Bakhtiyar Khilji) was a general under Qutb-ud-din Aibak.
He invaded Bihar at the end of the 12th century and beginning of the 13th century.
He sacked major Buddhist universities like Nalanda, Vikramashila, and Odantapuri, massacring many monks.
He established a town called Bakhtiyarpur.
His actions marked the beginning of Turk rule in Bihar.
Therefore, he is considered the real founder of Turk rule in the region.
Answer:Ibn Bakhtiyar Khilji (Option A)