Question

In this question, a statement of Assertion (A) is followed by a statement of Reason (R). Read the statements and choose the appropriate option:
Assertion (A): Students facing important examinations can be highly stressed.
Reason (R): Reduced levels of natural killer cell cytotoxicity have been found in people who are highly stressed.

• A. Both Assertion (A) and Reason (R) are true, and Reason (R) is the correct explanation of Assertion (A).
• B. Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of Assertion (A).
• C. Assertion (A) is true, but Reason (R) is false.
• D. Assertion (A) is false, but Reason (R) is true.

Hint:

In Assertion and Reason type questions, it is crucial to distinguish between correlation and causation. Even if both are true, the reason may not explain the assertion.

Answer 1

The Correct Option is B

Assertion (A): The assertion that students can experience high levels of stress during examinations is true. Examinations are significant events that can be very demanding, and this can create a lot of stress.
Reason (R): It is also true that reduced levels of natural killer (NK) cell cytotoxicity (NK cells are important in immune function) have been found in people experiencing high levels of stress. This is a well documented biological response to chronic stress.
Explanation: However, reduced NK cell cytotoxicity is a consequence of stress and does not explain why the students are stressed. Hence, while both are true, the reason does not explain the assertion.