Final answer:
The priority nursing intervention is teaching parents when to notify the health care provider to ensure their child's safe recovery from surgery.
Step-by-step explanation:
The priority nursing intervention for a family with a 6-year-old child recovering from surgery in an outpatient setting would be option 4: Teaching parents when to notify the health care provider. This education is crucial as it provides the parents with the knowledge and tools they need to effectively monitor their child's recovery at home and recognize signs of possible complications that warrant immediate medical attention. Providing comfort with a blanket and pillow or bagging belongings are supportive actions, but the education on post-operative care and when to seek help from a healthcare provider is essential for ensuring the child's safety and optimal recovery. Socializing with friends can be gradually reintroduced based on the child's recovery progress.