Final answer:
The nurse should approach the parents, introduce themselves, and encourage them to meet their newborn, while explaining the equipment and focusing on the infant.
Step-by-step explanation:
The nurse's most appropriate action would be to: go to the parents, introduce himself or herself, and gently encourage them to come meet their infant; explain the equipment first, and then focus on the newborn. This approach helps to establish trust and provide support to anxious parents visiting their newborn in the neonatal intensive care unit for the first time. It is important to be compassionate and informative, as the settings with medical equipment can be intimidating, and parental involvement is crucial for the emotional bonding and health of the newborn.