Beri-Beri, scurvy and rickets are respectively caused by a deficiency of
A. Vitamin B, D and C
B. Vitamin B, C and D
C. Vitamin D, B and A
D. Vitamin A, D and C

Hint:-The components which are necessary for a very small amount but essential for maintaining the metabolism of the body are known as vitamins. These are micronutrients which the body can’t synthesis itself. It can be obtained through the foods. Only some species can synthesize vitamin C.

Complete step-by-step solution:-
Another name of Beri-Beri is the thiamine deficiency. It is caused due to deficiency of vitamin B-1. The symptoms of Beri-Beri involve physical movement, the problem in breathing, an increase of heart rate, lower leg swelling, vomiting, vocal problem, etc. There are two types of Beri-Beri found, named wet Beri-Beri and dry Beri-beri.
Vitamin C deficiency may lead to the cause of scurvy. Vitamin C is essential for collagen formation. Deficiency in vitamin C causes problems in collagen formation. Collagen is needed to form the structure of the body and blood vessels. Symptoms of scurvy involve anemia, gum problem, loss of the tooth, etc. Scurvy can be treated by proper medication.
Rickets is the result of vitamin D deficiency. Rickets disease involves poor growth of bones, joint pain, deformation of bones. Vitamin D is an essential micronutrient that is taking part in bone formation. Thus deficiency of vitamin D results in rickets.
So, the correct answer is option B. Vitamin B, C, and D.

Note:- Two types of vitamins are found, named fat-soluble vitamins and water-soluble vitamins. The human body comprises 13 vitamins among them 9 vitamins (vitamin C and 8 B vitamins) are water-soluble and A, D, E, and K these four vitamins are water-soluble. Fat-soluble vitamins can’t excrete out of the body by urine but it is absorbed by the intestinal tract. Water-soluble vitamins can exist out of the body through urine.