Final answer:
The nurse should instruct the client to include milk that has the greatest amount of calcium in her diet.
Step-by-step explanation:
The nurse should instruct the client to include D) Milk that has the greatest amount of calcium in her diet. Milk and other dairy foods are important dietary sources of calcium. Other sources of calcium include green leafy vegetables, broccoli, canned sardines with their soft bones, nuts, beans, and seeds. However, milk has the highest amount of calcium among the given options.