Final answer:
The nurse's best source of information is the Nurse Practice Act.
Step-by-step explanation:
The nurse's best source of information to determine whether the procedure can legally be performed by the nurse is the Nurse Practice Act.
The Nurse Practice Act is a body of law that governs the scope of practice for nurses in a specific jurisdiction. It outlines the procedures, tasks, and responsibilities that nurses are allowed to perform.
By consulting the Nurse Practice Act, the nurse can ensure that they are acting within their legal boundaries and providing safe and appropriate care to the patient.