Final answer:
The best action for the nurse to take is to wait for the breakfast trays to arrive before administering insulin.
Step-by-step explanation:
The best action for the nurse to take in this situation is to b. Wait for the breakfast trays to arrive before administering insulin. Insulin injections are typically administered before meals to help regulate blood glucose levels. Since the breakfast trays have not yet arrived, it is important to wait so that the child can receive their meal promptly after the insulin is administered. This helps ensure that the insulin can effectively transport and store glucose, preventing any potential complications.