**Core Concept**
Rickets is a disorder caused by vitamin D deficiency, leading to softening of bones in children. It results from a combination of inadequate vitamin D intake, poor sunlight exposure, and impaired vitamin D metabolism.

**Why the Correct Answer is Right**
Rickets is characterized by softening of the bones, which can cause various clinical manifestations such as bowed legs, delayed closure of the fontanelles, and rachitic rosary (enlargement of the costochondral junctions). Vitamin D plays a crucial role in calcium absorption and bone mineralization. Deficiency of vitamin D leads to decreased calcium absorption, resulting in hypocalcemia and softening of the bones.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is not provided, but a common feature of rickets is indeed **bowing of the legs**, which is a result of softening of the bones.
**Option B:** This option is not provided, but a common feature of rickets is indeed **delayed closure of the fontanelles**, which is a result of impaired bone mineralization.
**Option C:** This option is not provided, but a common feature of rickets is indeed **rachitic rosary**, which is a result of softening of the bones at the costochondral junctions.

**Clinical Pearl / High-Yield Fact**
Rickets can be prevented by ensuring adequate vitamin D intake through diet or supplements, as well as providing sufficient sunlight exposure for children.

**Correct Answer:** None of the above options is provided.