A mother has a child who is 4 years of age, and she is expecting another child. The mother expresses concern to the nurse about how the older sibling will receive the newborn. Which intervention shared by the mother would require follow-up by the nurse?

“I plan to let him hear the baby’s heartbeat at the next prenatal visit.”.

“I have enrolled him in a sibling preparation class at the hospital.”.

“I think that I will just bring the new baby home as a surprise.”.

“I let him pick out a gift for the baby, and have one for him from the baby.”.