Name the hormone that regulates the formation of urine in nephron.

Explanation

### Step-by-Step Solution:

1. **Identify the Question**: The question asks for the name of the hormone that regulates the formation of urine in the nephron.

2. **Understand the Role of Hormones in the Nephron**: The nephron is the functional unit of the kidney, and various hormones influence its function, particularly in the regulation of urine formation.

3. **Focus on Key Hormones**: Among the hormones that affect urine formation, one of the most significant is the Antidiuretic Hormone (ADH).

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