Final answer:
The nurse should recommend leafy green vegetables to the client who needs extra iron due to heavy periods.
Step-by-step explanation:
The nurse should recommend leafy green vegetables to the client who needs extra iron due to heavy periods. Leafy green vegetables such as spinach, kale, and broccoli are excellent sources of iron. They are also rich in other nutrients like vitamin C, which helps in the absorption of iron from the intestine.