A home health nurse is teaching a client who has a new diagnosis of diabetes mellitus. Which of the following statements by the client indicates an understanding of the teaching?

A. "I will take my insulin 30 minutes before exercise.": Administering insulin immediately before exercise increases the risk of hypoglycemia. Timing of insulin should be coordinated with meals and activity, and clients should monitor blood glucose closely before and after exercise. B. "I will limit my fluid intake to 1 liter daily.": Restricting fluids is not recommended for clients with diabetes, as adequate hydration helps prevent hyperglycemia and supports kidney function. Limiting fluids could increase the risk of dehydration and complicate blood glucose control. C. "I will eat a low-residue diet.": A low-residue diet is typically used for gastrointestinal disorders, not diabetes management. Clients with diabetes benefit from a balanced diet that includes fiber to help regulate blood glucose and promote overall health. D. "I will use a mirror to inspect my feet daily.": Daily foot inspection is an important self-care practice for clients with diabetes to identify early signs of injury, infection, or neuropathy. Using a mirror helps the client see areas that are difficult to view, supporting prevention of complications such as ulcers.