The relationship between Calcium and Osteomalacia is as follows:
· Calcium is a nutrient whose deficiency leads to Osteomalacia, a condition characterized by soft bones.
Now, let's analyze the given options:
1) Stomach : Blindness
o There is no direct cause-effect or deficiency relationship between the stomach and blindness.
2) Iron : Anaemia
o Iron deficiency leads to Anaemia, a condition characterized by low red blood cell count. This matches the relationship of a nutrient deficiency causing a specific condition.
3) Heart : Cardiovascular
o This refers to an organ and a system or disease category but not a deficiency-related relationship.
4) Lungs : Tuberculosis
o Tuberculosis is an infectious disease that affects the lungs but is not caused by a nutrient deficiency.
Option (b) is the correct answer.