Which of the following foods is a source of carbohydrates?

Potatoes are a well-known source of carbohydrates. Carbohydrates are one of the three macronutrients that provide energy, and they are primarily found in plant-based foods. Potatoes, being tubers, are rich in starch, which is a complex carbohydrate. When consumed, starches are broken down into glucose, which the body uses for energy.

In contrast, chicken, fish, and cheese are primarily sources of protein and fat. They contain minimal carbohydrates, if any. This distinction highlights why potatoes are the correct choice, as they provide a significant amount of carbohydrates necessary for energy production and are a staple food in many diets around the world.