Which type of carbohydrates are digested slowly and provide sustained energy?

Complex carbohydrates are the correct answer because they are composed of longer chains of sugar molecules, which the body breaks down more gradually than simpler forms of carbohydrates. This slow digestion allows for a more sustained release of glucose into the bloodstream, leading to more consistent energy levels over time. Foods rich in complex carbohydrates, such as whole grains, legumes, and certain vegetables, also typically contain fiber, which further aids in the slow digestion process and helps maintain satiety.

On the other hand, simple sugars, processed carbohydrates, and refined sugars are typically rapidly digested and can lead to quick spikes in blood sugar levels followed by crashes, which may not provide the same level of sustained energy. While they can provide a quick source of energy, they do not support prolonged performance or steady energy levels as effectively as complex carbohydrates do.