Insulin secretion peaks with high blood glucose from carbohydrate intake Steps: - Insulin is a hormone released by the pancreas to lower blood glucose by promoting its uptake into cells and storage as glycogen. - Blood glucose rises most sharply after consuming high-carbohydrate foods, triggering the strongest insulin response. - Evaluate options: A involves carbs (rice), causing rapid glucose spike; B (exercise) consumes glucose, suppressing insulin; C (morning) involves mild cortisol-induced glucose rise; D (cold exposure) activates stress hormones that inhibit insulin. - Highest insulin occurs when glucose elevation is greatest and sustained, which is post-carb meal. Why A is correct: - Rice is a simple carbohydrate that quickly digests into glucose, elevating blood sugar levels and stimulating maximum insulin secretion per the glucose-insulin feedback mechanism. Why the others are wrong: - B: Exercise increases glucose uptake by muscles and releases counter-regulatory hormones like glucagon, reducing insulin to maintain energy availability. - C: Early morning cortisol slightly raises glucose (dawn phenomenon), but insulin response is minimal compared to a meal. - D: Cold stress triggers adrenaline, which raises glucose while …