Assertion : Oxytocin is also known as anti-diuretic hormone (ADH).
Reason : Oxytocin can cause an increase in the renal reabsorbtion of water.

Options

A. If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
B. If both Assertion and Reason are true, but the Reason is not the correct explanation of the Assertion.
C. If Assertion is true, but Reason is false.
D. If both Assertion and Reason are false.

Answer

To analyze the assertion and reason provided in the question, we can break it down into steps:

### Step-by-Step Solution:

1. **Understanding the Assertion**:
- The assertion states that "Oxytocin is also known as anti-diuretic hormone (ADH)."
- This statement is incorrect. Oxytocin and ADH (vasopressin) are two distinct hormones produced by the posterior pituitary gland.

2. **Understanding the Reason**:
- The reason states that "Oxytocin can cause an increase in the renal reabsorption of water."
- This statement is also incorrect. It is vasopressin (ADH) that is responsible for increasing the renal reabsorption of water, not oxytocin.

3. **Conclusion**:
- Since both the assertion and the reason are false, we can conclude that the correct answer is that both the assertion and reason are false.

4. **Final Answer**:
- Therefore, the correct option is (D) - Both assertion and reason are false.