A nurse is reinforcing teaching with a group of older adult clients about preventing hypothermia in the winter. Which of the following information should the nurse include in the teaching?

A. Set the indoor temperature at 17.8° C (64° F).: This temperature is too low for older adults, who have decreased thermoregulation and higher risk of hypothermia. Cooler indoor environments can cause rapid heat loss, especially when combined with limited mobility or chronic illness. A warmer home setting is recommended for safety. B. Eat low-carbohydrate meals and snacks.: Carbohydrates provide quick energy that helps generate body heat, making them important in preventing hypothermia. A low-carbohydrate diet reduces available energy and can worsen cold intolerance in older adults. Higher-energy, balanced meals are more appropriate. C. Cover the head when sleeping at night.: A significant amount of body heat is lost through the head, especially during sleep when metabolism slows. Wearing a hat or covering the head helps retain warmth and reduces the risk of hypothermia. This strategy is simple, effective, and appropriate for older adults. D. Wear a single layer of warm clothing.: A single layer does not provide enough insulation in cold weather, particularly for older adults with reduced fat stores and slowed circulation. Layered clothing traps warm air between layers and offers better protection from heat loss.