Correct Answer: Chota Nagpur plateau

Solution : The correct option is Chota Nagpur Plateau .

The region with the maximum concentration of iron and steel industries in India is the Chota Nagpur Plateau, specifically in the states of Jharkhand, Chhattisgarh, and Odisha. This region is rich in mineral resources, particularly iron ore and coal, which are essential raw materials for the production of iron and steel. Some major steel-producing centres in this region include Jamshedpur (Jharkhand), Bokaro (Jharkhand), Rourkela (Odisha), Bhilai (Chhattisgarh), and Durgapur (West Bengal).