Simple Explanation
Fertile plains productive agriculture, food supply, settlements और often better transport को support कर सकते हैं। इन favorable conditions के कारण long-term population concentration develop हो सकती है, जिससे density high होती है। इसलिए तीसरा विकल्प सही है। Permanent ice और lack of transport generally settlement को कठिन बनाते हैं। परीक्षा में fertile plains को high-density agricultural regions के common examples के रूप में समझें। / Fertile plains can support productive agriculture, food supply, settlements, and often better transport. These favorable conditions can encourage long-term population concentration, producing higher density. Therefore, the third option is correct. Permanent ice and poor transport generally make settlement more difficult. In examinations, understand fertile plains as common examples of high-density agricultural regions.
