Most abundant mineral of the vertebrate body is

The correct option is B Calcium

Vertebrae is the bone of backbone which is irregular in structure. It is mainly composed of calcium and phosphorous. Calcium is present in high amount as calcium hydroxyapatite. The amount of calcium is regulated by parathyroid hormone. In case of calcium deficiency the parathyroid hormone level increases which further converts the circulating calcium ions as bone deposition.

So, the correct answer is option B.