The correct answer is C. Vitamin B12.
Vitamin B12 is a water-soluble vitamin that is essential for human health. It is involved in many important bodily functions, including the production of red blood cells, the maintenance of nerve function, and the metabolism of carbohydrates, fats, and proteins. Vitamin B12 is found in animal products such as meat, fish, eggs, and dairy products. It is also available as a dietary supplement.
Vitamin B12 is a coenzyme, which means that it is a non-protein substance that is essential for the activity of certain enzymes. Enzymes are proteins that catalyze chemical reactions in the body. Vitamin B12 is a coenzyme for several enzymes that are involved in the metabolism of carbohydrates, fats, and proteins. It is also a coenzyme for enzymes that are involved in the production of red blood cells and the maintenance of nerve function.
Vitamin B12 deficiency can cause a variety of health problems, including anemia, nerve damage, and mental problems. Vitamin B12 deficiency is most common in older adults, people who follow a vegan diet, and people with certain medical conditions such as Crohn’s disease and pernicious anemia.
If you are concerned that you may be deficient in vitamin B12, talk to your doctor. They can order a blood test to check your vitamin B12 levels and recommend treatment if necessary.
Here is a brief explanation of each option:
- Vitamin K is a fat-soluble vitamin that is essential for blood clotting. It is also involved in the metabolism of bones and other tissues. Vitamin K is found in green leafy vegetables, broccoli, Brussels sprouts, and other vegetables. It is also available as a dietary supplement.
- Vitamin E is a fat-soluble vitamin that is an antioxidant. It protects cells from damage caused by free radicals. Vitamin E is found in vegetable oils, nuts, seeds, and green leafy vegetables. It is also available as a dietary supplement.
- Vitamin B12 is a water-soluble vitamin that is essential for human health. It is involved in many important bodily functions, including the production of red blood cells, the maintenance of nerve function, and the metabolism of carbohydrates, fats, and proteins. Vitamin B12 is found in animal products such as meat, fish, eggs, and dairy products. It is also available as a dietary supplement.