Name the mineral element that is needed for the following respectively:
Water balance

Explanation

**Step-by-Step Solution:**

1. **Understanding Water Balance**: Water balance refers to the equilibrium between the intake and loss of water in the body. It is crucial for maintaining the proper function of cells and organs.

2. **Role of Mineral Elements**: Certain mineral elements play a vital role in regulating water balance within the body. They help maintain the osmotic pressure and fluid distribution between cells and blood.

3. **Identifying the Key Mineral**: Among the various minerals, potassium is particularly important for maintaining water balance. It helps regulate fluid balance by influencing the movement of water in and out of cells.

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