Which food item is an example of a source of complex carbohydrates?

Potatoes are an excellent example of a source of complex carbohydrates because they contain starches, which are a primary type of complex carbohydrate. Complex carbohydrates are made up of long chains of sugar molecules and provide a sustained source of energy, as they take longer to digest compared to simple carbohydrates. In addition to being a source of energy, potatoes also provide dietary fiber, vitamins, and minerals, which contribute to overall nutrition.

While white rice and granola bars can contain carbohydrates, white rice primarily consists of simple carbohydrates when processed and may lack fiber, and granola bars can vary widely in their composition, often containing added sugars that may classify them more as simple carbohydrates depending on the specific ingredients used. Fruits, on the other hand, generally contain simple carbohydrates in the form of sugars but are also rich in fiber and nutrients, distinguishing them from the starchy nature of complex carbohydrates found in potatoes.