A child has bow legs ( bent legs ) he is suffering from the deficiency disease known as

The correct option is D

Rickets

The correct option is D:
Explanation of the correct option:

1. The lack of Vitamin D in children causes Rickets.
2. Rickets is a disease that disrupts bone development in children.
3. There are bone deformities, the bones become soft and weak.

Explanation of the incorrect option:

Option A:

1. Anemia is a disease in which the person loses healthy red blood cells and that lacks sufficient RBCs to carry oxygen.
2. It happens due to reduced iron content in the blood.
3. The symptoms include tiredness, pale skin, dizziness, etc.

Option B:

1. Goiter is caused due to the lack of iodine in the diet.
2. The thyroid present in our throat swells up.
3. Goiter is more common in people living in hilly or inland regions, where iodine is lacking in water and vegetables grown in those areas.

Option C:

1. Scurvy is caused due to a lack of vitamin C in the diet.
2. Scurvy is more common in infants that are not well breastfed.
3. The symptoms might include weakness, bleeding gums, fatigue, and rashes.

One of the following is not a vitamin deficiency disease. this one is Rickets.