Which foot care instruction is most important for the practical nurse (PN) to reinforce that minimizes a long-term complication for a client who is newly diagnosed with type 2 diabetes mellitus (DM)?

A. After washing feet, dry thoroughly between toes: Proper foot hygiene, including drying between the toes, helps prevent fungal infections. However, it does not directly address the long-term complication of diabetic neuropathy and poor wound healing that can lead to ulcers or amputations. B. Monitor fingerstick glucose daily for tight control: Regular glucose monitoring is essential for overall diabetes management but is not specific to preventing foot complications, the most critical prevention strategy involves prompt detection and treatment of foot injuries. C. Report any foot injury or sore that does not readily heal: Early reporting of nonhealing wounds is vital because diabetic neuropathy and impaired circulation can lead to ulcers, infection, gangrene, and potential amputation. Prompt medical evaluation of even minor injuries is the most important measure to prevent serious, long-term complications. D. Make sure shoe size fits to minimize rubbing and blisters: Wearing properly fitted shoes helps prevent friction and skin breakdown. However, the most crucial instruction is to report any injury or sore immediately, as delayed reporting increases the risk of severe diabetic foot complications.