Match the following:
| Element | Biological Significance |
| (a) Sodium | (i) Oxidation of glucose to produce ATP. |
| (b) Potassium | (ii) Helps in transporting sugars and amino acids into the cells. |
| (c) Magnesium | (iii) Helps in the coagulation of blood. |
| (d) Calcium | (iv) Helps in building and strengthening bones. |
| (a) | (b) | (c) | (d) | |
| 1. | (ii) | (i) | (iv) | (iii) |
| 2. | (i) | (ii) | (iii) | (iv) |
| 3. | (iv) | (ii) | (i) | (iii) |
| 4. | (iii) | (i) | (iv) | (iii) |