Final answer:
A client with Addison's disease would indicate an understanding of the diet by increasing sodium and fluids and restricting potassium.
Step-by-step explanation:
The client with Addison's disease would indicate an understanding of the diet by stating 'I will increase sodium and fluids and restrict potassium.'
As mentioned in the reference materials, aldosterone is a hormone that increases the excretion of potassium and the reabsorption of sodium. In Addison's disease, the adrenal glands don't produce enough aldosterone, leading to imbalances in sodium and potassium levels. Increasing sodium and fluids while restricting potassium helps to maintain proper electrolyte balance and manage symptoms of Addison's disease.