A client tells the nurse that sometimes he gets lightheaded and shaky when he exercises. The nurse advised him to always:

Choice A rationale: Taking insulin immediately before exercise can be dangerous for a person with diabetes. Physical activity increases glucose uptake by muscle cells, which, when combined with the effect of exogenous insulin, can lead to a rapid and significant drop in blood glucose levels, resulting in exercise-induced hypoglycemia. Choice B rationale: Eating a large meal immediately before or during exercise is not the recommended treatment for hypoglycemia. While a large meal will raise blood glucose, it is not the most rapid or efficient method. A concentrated source of simple carbohydrates is required to quickly raise blood sugar to a safe level. Choice C rationale: Hard candy contains simple carbohydrates, such as sucrose or dextrose, which are rapidly absorbed into the bloodstream. This quick absorption is crucial for reversing the symptoms of hypoglycemia, such as lightheadedness and shakiness, which are caused by insufficient glucose delivery to the brain. Choice D rationale: For many people with diabetes, adjusting insulin dosage is necessary to prevent hypoglycemia during exercise. However, a blanket recommendation to take no insulin before exercise is not scientifically sound or safe. The appropriate action depends on the type, duration, and intensity of exercise, as well as current blood glucose levels.