Assertion `:-` Angiotensin II, activates the adrenall cortex to release aldosterone.
Reason `:-` Aldosterone causes reabsorption of `Na^(o+)` and water from the distal parts of the tubule.

Options

A. If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion .
B. If both Assertion & Reason are True but Reason is not a correct explanation of the Assertion
C. If Assertion is True but the Reason is False.
D. If both Assertion & Reason are false.

Answer

### Step-by-Step Solution:

1. **Understanding the Assertion**: The assertion states that "Angiotensin II activates the adrenal cortex to release aldosterone." This is a true statement. Angiotensin II is a potent vasoconstrictor and plays a crucial role in the regulation of blood pressure. It stimulates the adrenal cortex to secrete aldosterone.

2. **Understanding the Reason**: The reason states that "Aldosterone causes reabsorption of Na⁺ and water from the distal parts of the tubule." This statement is also true. Aldosterone acts on the kidneys, specifically the distal convoluted tubule and collecting ducts, to promote the reabsorption of sodium ions (Na⁺) and water, which helps to increase blood volume and blood pressure.

3. **Analyzing the Relationship**: While both the assertion and reason are true, the reason provided does not directly explain the assertion. The assertion focuses on the activation of the adrenal cortex by angiotensin II, while the reason discusses the function of aldosterone. Therefore, the reason does not serve as a justification for the assertion.

4. **Conclusion**: Since both statements are true but the reason does not correctly explain the assertion, the correct answer is that the assertion is true, and the reason is also true, but the reason is not a correct explanation of the assertion.

### Final Answer:
Both the assertion and reason are true, but the reason is not the correct explanation for the assertion.

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