Final answer:
The nurse's priority intervention is to arrange for a kosher meal to meet the client's dietary needs.
Step-by-step explanation:
The nurse's priority intervention in this scenario is to arrange for a kosher meal to meet the client's dietary needs. Adhering to a kosher diet is an important aspect of the client's religious practice, and providing a kosher meal ensures that their cultural and dietary preferences are respected during their hospital stay. While obtaining surgical consent and administering prophylactic antibiotics are important steps in the preoperative process, they are not directly related to the client's religious and dietary needs.