The correct answer is (d). Vitamin K is essential for the production of blood clotting factors, which are proteins that help to stop bleeding. A deficiency of vitamin K can lead to bleeding disorders, such as hemophilia.
Vitamin A is important for vision, skin, and immune function. Vitamin D is important for bone health. Vitamin E is an antioxidant that protects cells from damage.
Bleeding disorders can also be caused by other factors, such as liver disease, kidney disease, and certain medications. If you are experiencing any bleeding problems, it is important to see a doctor to determine the cause and get treatment.