The correct option is Chhota Nagpur Plateau.
Explanation
India's mineral resources are unevenly distributed and are primarily concentrated in the Peninsular Plateau region. Geographers classify these resources into distinct belts, with the North-Eastern Plateau region being the most significant in terms of variety and quantity.
Analysis of Options:
- Chhota Nagpur Plateau Chhota Nagpur Plateau (Correct): Often referred to as the "Ruhr of India" or the mineral heartland, this plateau covers parts of Jharkhand, Odisha, West Bengal, and Chhattisgarh. It contains the most diversified mineral concentration in the country, hosting major reserves of coal (in the Damodar Valley), iron ore, manganese, bauxite, and mica.
- Western Rajasthan Western Rajasthan: This region belongs to the South-Western Plateau region. It is rich in non-ferrous minerals such as copper, zinc, and lead, as well as building stones (sandstone, granite, marble) and petroleum. However, it lacks the extensive ferrous mineral and coal deposits found in the Chhota Nagpur region.
- Indo-Gangetic Plains Indo-Gangetic Plains: This region is formed by thick alluvial deposits and is largely devoid of economic mineral resources.
- Aravalli Range Aravalli Range: While the Aravallis are rich in non-ferrous metals (copper, zinc) and industrial minerals, they do not possess the comprehensive combination of coal and ferrous metals (iron ore) that characterizes the Chhota Nagpur belt.
Key Takeaway: The Chhota Nagpur Plateau is India's most mineral-rich region, containing the majority of the country's coal and ferrous metal reserves.