1. The first question asks what medieval doctors believed caused illness. The correct answer is **Sin** because during the Middle Ages, illness was often thought to be a punishment from God for sins committed. 2. The second question asks what a doctor would tell a patient with a disease that did not show physical symptoms. The correct answer is **Bloodletting** because it was a common medieval medical practice believed to balance the body's humors. 3. The third question asks why cities had high disease rates. The correct answer is **They were overcrowded and therefore caused disease to spread quicker** because dense populations facilitated the rapid spread of diseases. These answers reflect historical beliefs and conditions during the Middle Ages.