Answer
C and D
Work Step by Step
Both the collecting duct and the nephron loop are associated with excreting hypotonic urine. The outer renal medullae sets a salt gradient and ensures that the duct is more concentrated than the blood plasma.
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.