Answer: Fruit juice
Food can be defined as any substance, which is consumed to provide nutritional support and energy to the organism. Carbohydrate is a type of food, which exhibit in the form of sugars, fibers and starches. Carbohydrates are found in many food products such as fruits, vegetables, grains and milk products.
Fruit juices are rich source of carbohydrates. The fruit juice consist of sugars like fructose, sucrose and glucose. The molecules of these sugars break down inside the body, facilitated by the digestive system to produce energy.
Hence, fruit source which can provide quick source of carbohydrates is fruit juice.