Final answer:
The priority action for the nurse is to contact local law enforcement officials to report the suspected abuse.
Step-by-step explanation:
The priority action for the nurse to implement in this situation is contacting local law enforcement officials to report the suspected abuse. When a nurse suspects that a child may be a victim of abuse, it is their responsibility to report it to the appropriate authorities. Local law enforcement officials have the jurisdiction and resources to investigate the potential abuse and ensure the child's safety. By reporting the abuse, the nurse takes a crucial step in protecting the child and initiating the necessary intervention.