Brittle bones, excessive bleeding, and stunted growth are symptoms of ________ deficiency.

The correct option is C

Calcium deficiency

Calcium deficiency is responsible for excessive bleeding, stunted growth and brittle bones.

Deficiency of phosphorus will result in body weakness.
Deficiency of potassium will result in muscle weakness and paralysis.
Deficiency of iodine will result in goiter (enlarged thyroid) and affects metabolism.