Carbohydrates provide instant energy because these are easily digestible.

Answer

**Step-by-Step Solution:**

1. **Understanding Carbohydrates**: Carbohydrates are macromolecules that serve as a primary source of energy for the body. They are composed of carbon, hydrogen, and oxygen.

2. **Digestion Process**: The digestion of carbohydrates begins in the mouth. When food enters the mouth, saliva, which contains the enzyme amylase, starts breaking down starches into simpler sugars.

3. **Role of Enzymes**: The enzyme amylase is crucial for carbohydrate digestion. It breaks down complex carbohydrates into simpler sugars, making them easier for the body to absorb.

4. **Further Digestion**: After the mouth, the food travels to the stomach and then to the small intestine. In the small intestine, additional enzymes from the pancreas (like pancreatic amylase) continue the breakdown of carbohydrates into monosaccharides (simple sugars).

5. **Absorption**: Once carbohydrates are broken down into simple sugars, they can be easily absorbed through the walls of the small intestine into the bloodstream.

6. **Energy Production**: The absorbed simple sugars are then transported to cells where they are converted into ATP (adenosine triphosphate), the energy currency of the cell, providing instant energy for various bodily functions.

7. **Conclusion**: Therefore, carbohydrates provide instant energy because they are easily digestible due to the action of specific enzymes that break them down quickly into absorbable forms.

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