单选题 Which of the following nursing interventions is most important postoperatively for an infant who has received a ventriculoperitoneal shunt?
A. Monitoring intake and output.
B. Allowing the infant to rest undisturbed.
C. Providing age-appropriate diversionary activities.
D. Initiating oral feedings.

【正确答案】 A
【答案解析】In the postoperative period, intake and output are carefully monitored to prevent fluid overload that could lead to increased intracranial pressure.