Rickets is caused by the deficiency of vitamin D. Hence, it is the correct answer.

Vitamin B12 is required for the formation of red blood cell. Hence, it is the correct answer.

Butter is a source of animal fat. It is not a source of plant fat. Hence, it is the correct answer.

.An irregular growth of teeth is caused due to the deficiency of vitamin D.Hence, Sahil should include cod liver oil in his diet as it is a rich source of vitamin D. Therefore, this is the correct answer.

Roughage is required for the proper functioning of the bowel movement. Hence, it is the correct answer.

Vitamin C gets destroyed due to heat during cooking as it is a water soluble vitamin. Hence, it is the correct answer.

Iodised salt should be consumed to reduce the incidence of goiter because deficiency of iodine causes goitre. Hence, it is the correct answer.

Sugar is a source of 100% carbohydrates. Hence, it is the correct answer.

Sodium is required for the proper functioning of the nervous system. Hence, it is the correct answer.

Raju is suffering from kwashiorkor as his stomach has become swollen, legs have become thin and the skin shows ugly patches. His mental and physical growth has slowed down. All these are symptoms of kwashiorkor. Hence, this is the correct answer.

Pulse is a source of plant protein. Hence, it is the correct answer.

Calcium and phosphorous should be included in a balance diet to develop strong bones because these two minerals work together to keep bones strong.

Fat helps to keep the body warm. It is a role of fat in the body’s system. It is not a role of water in the body’s system. Hence, it is the correct answer.

Obesity is caused by overeating of carbohydrates and fats. Hence, it is the correct answer.

Protein is required by our body to make a new cell. Hence, it is the correct answer.