The correct answer is: Vitamin C.
Vitamin C is a water-soluble vitamin, which means that it is not stored in the body and is excreted in the urine. Vitamins A, D, E, and K are fat-soluble vitamins, which means that they are stored in the body and are not excreted in the urine.
Vitamin C is a necessary nutrient for humans. It is involved in many important bodily functions, including the production of collagen, the absorption of iron, and the maintenance of a healthy immune system. Vitamin C is also a powerful antioxidant, which means that it helps to protect cells from damage caused by free radicals.
Vitamin C is found in many fruits and vegetables, including citrus fruits, tomatoes, broccoli, and Brussels sprouts. It is also available as a dietary supplement.
The recommended daily intake of vitamin C for adults is 90 milligrams for men and 75 milligrams for women. However, some people may need more vitamin C, such as smokers, people with certain medical conditions, and people who are under stress.
Vitamin C deficiency can cause a number of health problems, including scurvy, fatigue, and impaired wound healing. Scurvy is a serious condition that can lead to death if left untreated.
It is important to get enough vitamin C from food or supplements to maintain good health.