A nurse is assessing a client who has diabetes mellitus. Which of the following findings is a manifestation of hypoglycemia?

Choice A reason: Cool, clammy skin is a classic sign of hypoglycemia. It results from the activation of the sympathetic nervous system in response to low blood glucose levels. This autonomic response also includes sweating, tremors, and anxiety, and is an early warning sign that glucose levels are dangerously low. Choice B reason: Vomiting is not a typical manifestation of hypoglycemia. It is more commonly associated with hyperglycemia, diabetic ketoacidosis, or gastrointestinal disturbances. It does not reliably indicate low blood sugar. Choice C reason: A fruity odor on the breath is a hallmark sign of diabetic ketoacidosis (DKA), which occurs in hyperglycemia due to ketone accumulation. This symptom is not associated with hypoglycemia and represents a different metabolic emergency. Choice D reason: Bradycardia is not a common feature of hypoglycemia. In fact, hypoglycemia often triggers tachycardia due to sympathetic stimulation. Bradycardia may suggest other cardiac or neurological issues and is not diagnostic of low blood glucose.