Assertion. Tidal volume is the volume of air inspired or expired with the normal breath .
Reason Adult person contains 500 ml expired or inspired volumes of air with each normal breath.

Options

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

Answer

To solve the question, we need to analyze both the assertion and the reason provided:

### Step-by-Step Solution:

1. **Understanding the Assertion**:
- The assertion states that "Tidal volume is the volume of air inspired or expired with the normal breath."
- This is a correct definition of tidal volume. Tidal volume refers to the amount of air that is inhaled or exhaled during a normal breath without any additional effort.

**Hint**: Remember that tidal volume is related to the normal breathing process.

2. **Understanding the Reason**:
- The reason states that "An adult person contains 500 ml expired or inspired volumes of air with each normal breath."
- This is also true. The typical tidal volume for a healthy adult at rest is approximately 500 ml.

**Hint**: Think about the average volume of air exchanged during a single breath in a resting adult.

3. **Evaluating the Relationship**:
- Both the assertion and the reason are true statements. However, the reason does not explain why the tidal volume is 500 ml. It simply states the volume without providing a rationale or explanation for that specific measurement.

**Hint**: Consider whether the reason provides a causal relationship or just a fact.

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

### Final Answer:
- The correct choice is: Assertion and Reason are true, but Reason is not the correct explanation of Assertion.