Given below are two statements. One is labelled Assertion (A) and the other is labelled Reason (R).
Assertion (A): Protective masks are recommended for workers in industries involving grinding or stone-breaking.
Reason (R): These industries produce so much dust that the body's defence mechanism may not adequately cope, causing lung fibrosis and significant lung damage.
In light of the above statements, choose the correct answer from the options given below.

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Both (A) and (R) are true but (R) is not the correct explanation of (A).

Both (A) and (R) are false.

(A) is true but (R) is false.

Both (A) and (R) are true and (R) is the correct explanation of (A).

answer is A.

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Detailed Solution

In this case, both the assertion and the reason are true. The excessive dust production justifies the recommendation of protective masks for workers in these industries. The reason is that high levels of dust can overwhelm the body's defence mechanisms, leading to inflammation and fibrosis, which can cause significant damage to the lungs. Therefore, the reason correctly explains why protective masks are recommended in such occupational settings.

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