Concept:Glucose is fully reabsorbed by the kidney tubules in a healthy person, so it is not excreted in urine.
Explanation:Urine from a healthy person normally contains urea, mineral salts, and water, which are either waste products or excess substances removed from the body.
When blood is filtered in the kidneys, glucose also enters the filtrate.
However, during tubular reabsorption, nearly all glucose is taken back into the blood.
Therefore, glucose is not usually present in the urine of a healthy person.
Answer:C. Glucose