Final answer:
Fruits and vegetables are the best sources of vitamin C, while animal-based foods like meat and fish are rich in vitamin B12.
Step-by-step explanation:
The best source of vitamin C is plant-based foods, particularly fruits and vegetables such as oranges, strawberries, tomatoes, and broccoli. On the other hand, vitamin B12 is naturally rich in animal-based foods, including meat, fish, poultry, eggs, and dairy products. While we can obtain most vitamins through a healthy diet, certain groups may still need supplementation, as in the case of vitamin D for individuals with limited sun exposure.
Vitamins are organic compounds that the body needs in small amounts to function properly. Most vitamins must be obtained from foods, as the body cannot produce them in sufficient quantities.