Final answer:
To help a 7-year-old child accept a newly adopted newborn, suggest obtaining a gift from the newborn to present to the sibling.
Step-by-step explanation:
When helping a 7-year-old child accept a newly adopted newborn, the nurse should suggest obtaining a gift from the newborn to present to the sibling. This gesture can help the older child feel included and special, while also promoting a positive relationship between the siblings.