The correct answer is (a) Vitamin K.
Vitamin K is a fat-soluble vitamin that is essential for blood clotting. It is also involved in bone metabolism and wound healing. Vitamin K is found in green leafy vegetables, broccoli, Brussels sprouts, cabbage, cauliflower, and liver.
Vitamin A is a fat-soluble vitamin that is essential for vision, skin, and immune function. It is found in animal products such as liver, eggs, and dairy products, as well as in plant-based foods such as carrots, sweet potatoes, and dark leafy greens.
Vitamin B is a water-soluble vitamin that is essential for energy production, metabolism, and nerve function. It is found in a variety of foods, including meat, poultry, fish, eggs, dairy products, legumes, nuts, and seeds.
Vitamin C is a water-soluble vitamin that is essential for the immune system, wound healing, and collagen production. It is found in citrus fruits, berries, tomatoes, broccoli, and leafy green vegetables.
Vitamin K is the only vitamin that is directly involved in blood clotting. It is required for the production of prothrombin, a protein that is essential for the formation of blood clots. Vitamin K deficiency can lead to bleeding problems, such as easy bruising and prolonged bleeding from cuts.