I just took the test and the answer is letter D.
The Inca developed important medical practices, including surgery on the human skull. In such operations, they cleaned the area to be operated on and then gave the patient a drug to make him or her unconscious—procedures similar to the modern use of antiseptics and anesthesia.
The Taj Mahal was built during the Mughal rule in India.
<span>The decline of feudalism occurred due to a number of events which occurred during the Medieval era of the Middle Ages.</span>