The primary source of vitamin C is fruits and vegetables, with citrus fruits being particularly rich in this essential nutrient. Oranges, lemons, grapefruits, and limes are well-known for their high vitamin C content, but other fruits like strawberries, kiwi, and papaya also provide significant amounts. Vegetables such as bell peppers, broccoli, Brussels sprouts, and tomatoes are likewise excellent sources. Vitamin C, or ascorbic acid, is important for the growth and repair of tissues, the immune system, and acts as a powerful antioxidant. A balanced diet including a variety of these fruits and vegetables can help prevent deficiency.