A The fine branches of trachea are called bronchoiles.
R Bronchitis is a respiratory diseases.

Options

A. If both As and R are correct and R is correct explanation of As
B. If both As and R are correct but R is not correct explanation of As
C. If As is correct, R is wrong
D. If both As and R are wrong.

Answer

To solve the assertion and reason question, we will analyze both statements step by step.

### Step 1: Analyze the Assertion
The assertion states: "The fine branches of trachea are called bronchioles."

- The trachea is the main airway that conducts air into the lungs.
- The trachea divides into two primary bronchi (left and right).
- Each primary bronchus further divides into secondary bronchi.
- The smallest branches of these secondary bronchi are called bronchioles.

**Conclusion for Step 1:** The assertion is true.

### Step 2: Analyze the Reason
The reason states: "Bronchitis is a respiratory disease."

- Bronchitis refers to the inflammation of the bronchi, which are the larger air passages that branch off from the trachea.
- This inflammation can lead to symptoms such as coughing, wheezing, and difficulty in breathing, indicating that it affects the respiratory system.

**Conclusion for Step 2:** The reason is also true.

### Step 3: Determine the Relationship
Now we need to determine if the reason is a correct explanation for the assertion.

- The assertion talks about the anatomical structure (bronchioles) and their relation to the trachea.
- The reason discusses a disease (bronchitis) that affects the bronchi, but it does not explain why the fine branches of the trachea are called bronchioles.

**Conclusion for Step 3:** While both statements are true, the reason does not explain the assertion.

### Final Answer
Both the assertion and reason are correct, but the reason is not the correct explanation for the assertion. Therefore, the correct option is that both assertion and reason are correct, but the reason is not the correct explanation of the assertion.

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