Aldosterone/Parathormone regulates `Na^(+)` and `K^(+)` balance in the body fluids.

Explanation

### Step-by-Step Solution

1. **Identify the Hormones**: The question mentions two hormones: Aldosterone and Parathormone. Both play roles in the regulation of body fluids.

2. **Understand Aldosterone**: Aldosterone is a mineralocorticoid hormone produced in the zona glomerulosa of the adrenal cortex. It is a steroid hormone that primarily regulates sodium (Na⁺) and potassium (K⁺) balance in the body.

3. **Function of Aldosterone**: Aldosterone is released when there is an increase in potassium ion concentration or a decrease in sodium ion concentration in the blood. Its main functions include:
- Stimulating the renal tubules to reabsorb sodium ions (Na⁺) back into the bloodstream.
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