Assertion :The cardiac output of an ordinary man and of an athelete is the same. Reason: It is impossible to alter the stroke volume as well as heart rate.
A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
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B
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
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C
Assertion is correct but Reason is incorrect
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D
Both Assertion and Reason are incorrect
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Solution
The correct option is D Both Assertion and Reason are incorrect
The
cardiac output of a person is calculated by multiplying the stroke volume and
the heart rate. Hence, to alter a person’s cardiac output both the stroke volume
and the heart rate can be altered. Consequently, the cardiac output of an
ordinary man is less than that of an athlete.
Thus, the correct answer is 'Both Assertion and Reason are incorrect.'