The correct option is A Vitamin-D
Vitamin D helps to absorb calcium and phosphorus, and it's deficiency in the body, causes rickets.
Vitamin A is needed for healthy bones, eyes, skin and also acts as an anti-oxidant. It's deficiency in the body causes night blindness and hyperkeratosis.
Vitamin K is required in the body for blood clotting cascade and for bone metabolism. It's deficiency causes bleeding diathesis.
Vitamin E acts as an anti-oxidant and is also vital for smooth muscle development. It's deficiency in infants, leads to hemolytic anemia.