Q: Answer the following question given this paragraph: Urine is a liquid that is formed by the kidneys when they filter wastes from the blood. Urine contains mostly water, but it also contains salts and nitrogen-containing molecules. The amount of urine released from the body depends on many things. Some of these include the amount of fluid and food a person consumes and how much fluid they have lost from sweating and breathing. Urine ranges from colorless to dark yellow but is usually a pale yellow color. Light yellow urine contains mostly water. The darker the urine, the less water it contains. Q: Where is urine formed in the body? A:

(A). the liver;
(B). the pancreas;
(C). the lungs;
(D). the kidneys;
The answer is:
(D).