Which organ helps in the separation of waste from blood stream in the form urine?

Options

A. Kidneys
B. Ureters
C. Urinary bladder
D. Urethra

Explanation

**Step-by-Step Solution:**

1. **Identify the Question**: The question asks which organ is responsible for separating waste from the bloodstream in the form of urine.

2. **Understand the Options**: The options provided are:
- A) Kidney
- B) Ureter
- C) Urinary Bladder
- D) Urethra

3. **Analyze Each Option**:
- **Kidney**: This organ is responsible for filtering blood and removing waste products, which are then excreted as urine.
- **Ureter**: This is a tube that carries urine from the kidneys to the urinary bladder; it does not filter blood.
- **Urinary Bladder**: This organ stores urine until it is excreted; it does not filter blood.
- **Urethra**: This is the duct through which urine is expelled from the body; it does not filter blood.

4. **Determine the Correct Answer**: The only organ among the options that performs the function of filtering waste from the blood and forming urine is the **Kidney**.

5. **Conclusion**: Therefore, the correct answer to the question is **Kidney**.

---