Which of the following nursing goals has the highest priority in the care of this infant?

The correct answer is D: Maintain integrity of the sac. This is the highest priority because it pertains to the physical well-being and safety of the infant with a sac defect. Maintaining the integrity of the sac is crucial to prevent infection and further complications. Providing age-appropriate stimulation (A) is important but not as urgent as ensuring the sac's integrity. Educating parents about the defect (B) is essential for long-term care but does not address immediate needs. Promoting maternal-infant bonding (C) is important for emotional well-being but not as critical as ensuring the sac's integrity.