Correct Answer: A

Rationale: The Babinski reflex is the correct answer. This reflex is characterized by the fanning out of the toes when the sole of the foot is stroked. It is a normal reflex in infants and is typically present at birth, disappearing by around 12 months of age. The Moro reflex, which involves the infant's response to a sudden loss of support or a loud noise, is not related to the fanning of toes. Sucking and rooting reflexes are related to feeding behaviors and are not elicited by stroking the sole of the foot.

Correct Answer: C

Rationale: A low-phosphorus diet is recommended for children with chronic renal failure to prevent hyperphosphatemia, which can lead to bone disease and other complications. Phosphorus is found in many processed foods and should be limited. Choices A, B, and D are incorrect because high sodium intake can lead to fluid retention and hypertension, while Vitamin D supplementation and vitamins C, E, K are not specifically indicated for dietary recommendations in chronic renal failure.

Correct Answer: B

Rationale: Mortality statistics describe the number of individuals who have died over a specific period, providing insight into public health concerns.

Correct Answer: D

Rationale: Pediatric nurses promote health through disease prevention, support, counseling, therapeutic relationships, and participating in ethical decision-making.

Correct Answer: A

Rationale: The correct answer is A: 'May reduce pain perception.' When teaching parents about nonpharmacologic strategies for pain management in children, the nurse should include information that these techniques may help reduce pain perception, make the pain more tolerable, decrease anxiety, and enhance the effectiveness of analgesics. It is important to note that nonpharmacologic techniques should be learned before the pain occurs, and it is beneficial to use both pharmacologic and nonpharmacologic measures for pain control. Choice B is incorrect because nonpharmacologic strategies do not make pharmacologic strategies unnecessary but rather complement them. Choice C is incorrect as nonpharmacologic techniques, when properly learned and applied, do not usually take too long to implement. Choice D is incorrect as the goal of nonpharmacologic strategies is not to trick children into believing they do not have pain, but to help them cope with and manage their pain effectively.