Assertion `:-` Conditional reabsorption of `Na^(o+)` and water takes place in DCT.
Reason `:-` DCT is also capacble of selective secretion of hydrogen and potassium ions.

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 "Conditional reabsorption of Na⁺ and water takes place in the DCT (Distal Convoluted Tubule)."
- The DCT is a part of the nephron in the kidney, and it plays a role in the reabsorption of sodium ions and water. However, this reabsorption is conditional, meaning it occurs under specific physiological circumstances, such as the influence of hormones like aldosterone.

2. **Understanding the Reason**: The reason provided states that "DCT is also capable of selective secretion of hydrogen and potassium ions."
- This statement is true. The DCT does have the ability to secrete hydrogen ions (H⁺) and potassium ions (K⁺) into the tubular fluid, which is important for maintaining acid-base balance and electrolyte homeostasis.

3. **Evaluating the Truth of the Statements**:
- The assertion is true because the DCT does reabsorb Na⁺ and water conditionally.
- The reason is also true because the DCT can selectively secrete H⁺ and K⁺ ions.

4. **Determining the Relationship**:
- The assertion is true, and the reason is true, but the reason does not explain the assertion. The assertion focuses on reabsorption, while the reason discusses secretion, which are two different processes.

5. **Conclusion**: Based on the evaluation, the correct option is that both the assertion and reason are true, but the reason is not the correct explanation for the assertion.

### Final Answer:
- Both the assertion and reason are true, but the reason does not explain the assertion.