Hormone of adrenal cortex which helps in maintaining electrolyte and body fluid volume is

Answer

**Step-by-Step Solution:**

1. **Identify the Gland**: The question asks for a hormone produced by the adrenal cortex. The adrenal cortex is the outer part of the adrenal glands, which are located on top of the kidneys.

2. **List the Hormones of the Adrenal Cortex**: The adrenal cortex secretes several hormones, primarily including cortisol and aldosterone.

3. **Understand the Functions of Each Hormone**:
- **Cortisol**: This hormone is classified as a glucocorticoid. Its primary role is in carbohydrate metabolism and it does not significantly influence electrolyte balance or body fluid volume.
- **Aldosterone**: This hormone is classified as a mineralocorticoid. Its main function is to regulate electrolyte balance and maintain body fluid volume. It influences the reabsorption of sodium and the retention of water, which are crucial for maintaining blood pressure and overall fluid balance in the body.

4. **Determine the Correct Answer**: Since the question specifically asks for a hormone that helps in maintaining electrolyte and body fluid volume, the correct answer is aldosterone.

5. **Conclusion**: The hormone of the adrenal cortex that helps in maintaining electrolyte and body fluid volume is **aldosterone**.

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