Biology

The correct answer is: B.Carbohydrate

Explanation:

Carbohydrates are the body's primary source of quick energy, especially during physical activity. They are broken down into glucose, which provides immediate fuel for muscles and the brain.

Before exercise: Eating carbohydrates before exercise ensures that your muscles have enough stored energy (glycogen) for physical activity.

During exercise: Consuming carbohydrates during exercise, especially for longer or intense sessions, helps maintain blood glucose levels and delay fatigue.

After exercise: After exercise, consuming carbohydrates helps replenish the glycogen stores in muscles, aiding in recovery and preparing for future exercise.