Answer:
Clinical deficiency of calcium.
Explanation:
Calcium is an important element present in the living organism. Calcium is present in bones, teeth and blood. Calcium is involved in the cell signalling also.
The main constituent of calcium is bone. The hip fracture in a 70 year old woman may likely occur due to the clinical deficiency of calcium. The calcium deficiency causes various bone related problems.
Thus, the correct answer is option (d)
