Which of the following is a characteristic of complex carbohydrates?

Complex carbohydrates are defined by their structural composition, which includes three or more sugar molecules linked together. This molecular arrangement can vary in size, leading to classifications such as oligosaccharides (which contain about 3-10 sugar units) and polysaccharides (which contain many sugar units). Common examples of complex carbohydrates include starch, glycogen, and fiber.

These carbohydrates are typically found in foods such as whole grains, legumes, and vegetables. Their complex structure allows for a more gradual breakdown during digestion compared to simple carbohydrates, which consist of single sugar units and break down quickly. This gradual digestion process contributes to a more stable release of energy over a longer period, as opposed to the immediate energy spikes often associated with simple carbohydrates. Thus, this characteristic of complex carbohydrates makes them an important component of a balanced diet, providing sustained energy and promoting digestive health.