Assertion `:-` Emphysema is a chornnic disorder in which alveolar walls are damaged due to which respiratory surface decreases. Reason `:-` One of the major cause of emphysema is due to inflammation of bronchi and bronchioles.

Options

A. If both Assertion & Reason are True & the Reasonn 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 emphysema is a chronic disorder characterized by damage to the alveolar walls, which leads to a decrease in the respiratory surface area.
- This statement is true because emphysema is indeed a chronic lung condition that results in the destruction of alveoli, reducing the area available for gas exchange.

2. **Analyzing the Reason:**
- The reason provided claims that one of the major causes of emphysema is inflammation of the bronchi and bronchioles.
- This statement is false. While inflammation of the bronchi and bronchioles is associated with other respiratory conditions, such as asthma, the primary cause of emphysema is typically long-term exposure to irritants, particularly cigarette smoke.

3. **Conclusion:**
- Since the assertion is true and the reason is false, we can conclude that the correct relationship between the two statements is that the assertion is correct, but the reason is not.

4. **Final Answer:**
- The correct option is C: Assertion is true, but the reason is false.