Simple Explanation
Severe drought migration and settlement decline बढ़ा सकता है। Large-scale water transfer drinking, agriculture and industry को support करके region की habitability improve कर सकता है। इससे out-migration कम हो सकती है या settlement decline slow हो सकता है। इसलिए चौथा विकल्प सही है। परीक्षा में government intervention और technology को environmental stress के population effects modify करने वाले factors के रूप में समझें। / Severe drought can increase migration and settlement decline. Large-scale water transfer can support drinking supplies, agriculture, and industry, improving the region's habitability. This may reduce out-migration or slow settlement decline. Therefore, the fourth option is correct. In examinations, understand government intervention and technology as factors that can modify the population effects of environmental stress.
