Deficiency of which vitamin causes rickets
A.Vitamin D
B.Vitamin-B
C.Vitamin-A
D.Vitamin-K

Hint: Rickets are caused by the vitamin which is known as sunshine vitamin. We get this vitamin from sunlight along with some other suitable chemicals present in the body.

Complete answer:
The deficiency of vitamin D causes rickets. Due to inadequate amounts of vitamin D in the body the bones become weak in children. This is because of reduction in absorption of calcium and phosphorus which makes bones strong and healthy. Vitamin D mainly absorbs the calcium and other minerals.

Hence, the correct option in A.

Additional information:
The food sources of vitamin B are among egg yolk, shrimp, Milk, cereal, yogurt and orange juice.The symptoms of a vitamin D deficiency include: tiredness, aches and pain. A person having vitamin deficiency generally does not feel well, High pain in bones and muscle, stress in legs pelvis and bones, getting difficulty in climbing stairs or standing from a low lying chair.
The deficiency of vitamin A causes night blindness.
The deficiency of vitamin-K causes osteoporosis, bleeding and pore bones.
Vitamin B is water soluble vitamins that contain the complexes b1, b2, b3, B5, b6, b7, b9, b12. The major source of vitamin b is milk, cheese, eggs, fish, dark and green vegetables and meat. Lack of vitamin b causes anemia, skin irritation, insomnia, diarrhea and weakness.

Note:
Vitamin is a micronutrient that is required by the human body for the proper and smooth functioning. They are organic molecules. A total of 13 vitamins are there. They are fat soluble steroids.