Final answer:
The mortality and morbidity rate for preterm infants is 4 to 5 times higher than that of an older infant of comparable weight. Option d is correct.
Step-by-step explanation:
The nurse explains that the mortality and morbidity rate for preterm infants is higher than that of an older infant of comparable weight by 4 to 5 times. Preterm birth, which is defined as birth occurring before 37 weeks of gestation, can lead to a higher risk of complications and health issues for the baby.
Factors such as underdeveloped respiratory and nervous systems contribute to the increased mortality and morbidity rates in preterm infants.