Assertion (A): Region having low rainfall and low population suffers from water scarcity.

Reason (R): Regions having high annual rainfall and large populations do not suffer from water scarcity.

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

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

(A) is correct but (R) is wrong.

(A) is wrong but (R) is correct.

answer is D.

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Detailed Solution

The assertion is unvalid but the reasoning is valid. Due to an expanding population and the resulting higher demand for water and uneven access to it, there may be a water shortage. A vast population requires more water for home consumption and food production. Therefore, water resources are being overused to increase irrigated areas and dry-season agriculture to increase food-grain output. As a result, a region with a high population and little yearly rainfall may experience water shortage due to excessive water resource consumption. Water shortage affects areas with high yearly rainfall but severely polluted water since contaminated water is unfit for human consumption.

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