A male client with chronic kidney disease (CKD) is refusing to take his medication and has missed two hemodialysis appointments. What is the best initial action for the nurse?

Correct Answer: A

Rationale: Exploring the client's feelings assesses acceptance, the critical first step.

Correct Answer: D

Rationale: Kidneys manage blood volume, pressure, and pH via filtration and secretion.

Correct Answer: A

Rationale: Pyuria indicates pus in the urine, suggesting infection or inflammation.

Correct Answer: B

Rationale: ADH from posterior pituitary increases water reabsorption.

Correct Answer: D

Rationale: Proximal tubule handles bulk reabsorption of water and solutes.