Correct Answer: B

Rationale: Blurred vision and headache in a child with acute glomerulonephritis may indicate severe hypertension, which requires immediate assessment and intervention. Blood pressure should be checked, and the healthcare provider notified.

Correct Answer: C

Rationale: Renal transplantation is the preferred method of treatment for children with end-stage renal disease, as it offers the best chance for a normal lifestyle compared to long-term dialysis. Transplantation can be performed at any age, and kidneys can come from adult donors as well.

Correct Answer: B

Rationale: Signs of kidney transplant rejection include fever, diminished urinary output, and swelling/tenderness in the graft area. These symptoms indicate that the body may be rejecting the transplanted organ, requiring immediate medical attention.

Correct Answer: C

Rationale: Mannitol and furosemide are diuretics commonly used to induce diuresis in acute renal failure, helping to provoke urine flow and manage fluid overload. Calcium gluconate and electrolyte supplementation are used for other specific conditions and not primarily for diuresis.

Correct Answer: D

Rationale: The correct answer is D because babbling is an early indicator of hearing ability in infants. Lack of babbling by 2 months may suggest a potential hearing issue. Choices A, B, and C are incorrect because turning away from a sound, startling with sudden loud noises immediately after birth, and talking at 4 months are not primary indicators of hearing loss in infants.