11. Most people are born with two kidneys. However, it is possible to live with only one kidney. Doctors
recommend that people with one kidney have their urine tested at least once a year.
Which of the following are doctors most likely trying to determine when testing the urine of a person with only
one kidney?
A. that enough nutrients are dissolving in the blood
B. that enough oxygen is being delivered throughout the body
C. that enough red blood cells are being replaced in the blood
D. that enough nitrogenous waste is being removed from the body