Biology

The correct answer is D.Quick energy.

Carbohydrates primarily serve as a source of energy for the body. When consumed, carbohydrates are broken down into glucose, which is used by cells to produce ATP (adenosine triphosphate), the energy currency of the cell. This energy is essential for various bodily functions and activities.

Here's a breakdown of the options:

A.Movement – While movement involves energy (which carbohydrates provide), it is not the direct function of carbohydrates themselves. Movement is the result of muscle contraction, which requires energy derived from carbohydrates, fats, ...