The Bibi Ka Maqbara is a prominent historical monument located in Aurangabad, Maharashtra, India. It was built by the Mughal Emperor Aurangzeb. Option 1, Akbar, is incorrect because Akbar was Aurangzeb`s grandfather and ruled much earlier. Option 2, Jahangir, is incorrect because he ruled before Aurangzeb as well. Option 3, Shahjahan, is also incorrect because Shahjahan, Aurangzeb`s father, is known for building the Taj Mahal in Agra instead. Therefore, option 4, Aurangzeb, is the correct answer as he was the ruler who built the Bibi Ka Maqbara.