An area formed by alluvial soil brought by rivers is generally found more in which physical division?

Correct answer: Northern Plains

The direct answer is D, the Northern Plains. Alluvial soil is material such as sand, silt and clay carried and deposited by rivers. Large rivers lose speed on flatter land, so they spread these sediments over wide areas. This process created the Northern Plains, especially along the Indus, Ganga and Brahmaputra systems. Option A, the Himalayas, are the source region for many rivers, but the broad alluvial deposits are mainly spread in the plains at their foot. Option B, the Indian Desert, is mainly dry and sandy; it does not represent India’s chief river-built alluvial plain. Option C, island groups, are separated by sea and are not the extensive river-deposit region intended here. Option D is correct because the Northern Plains are made largely of thick alluvial deposits and are fertile. Memory cue: river-brought soil plus broad flat land means Northern Plains.