Assertion` :` Cardiac output is the volume of blood pumped out by each ventricle per minute.
Reason `:` Ther cardiac output of an athlete will be much higher than that of an ordinary man.

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 "Cardiac output is the volume of blood pumped out by each ventricle per minute."
- **Explanation**: Cardiac output (CO) is indeed defined as the amount of blood the heart pumps in one minute. It can be calculated using the formula:
\[ \text{Cardiac Output (CO)} = \text{Stroke Volume (SV)} \times \text{Heart Rate (HR)} \]
- **Conclusion**: This assertion is correct.

2. **Understanding the Reason**: The reason states that "The cardiac output of an athlete will be much higher than that of an ordinary man."
- **Explanation**: Athletes typically have a higher stroke volume due to their training, which leads to a more efficient heart. This means that during exercise, their heart can pump more blood per beat compared to an ordinary person. Therefore, their cardiac output can be significantly higher, especially during physical activity.
- **Conclusion**: This reason is also correct.

3. **Evaluating the Relationship**: Now we need to determine if the reason correctly explains the assertion.
- **Explanation**: Since cardiac output is influenced by both stroke volume and heart rate, and athletes have a higher stroke volume due to their training, it logically follows that their cardiac output would be higher than that of an ordinary person. Thus, the reason does explain the assertion.
- **Conclusion**: The reason is a correct explanation of the assertion.

4. **Final Conclusion**: Both the assertion and reason are true, and the reason is the correct explanation of the assertion.

### Final Answer:
Both assertion and reason are true, and the reason is the correct explanation of the assertion.

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