The correct answer is: Steel industry.
The steel industry is considered the backbone of Chhattisgarh’s industrial sector because it is the largest employer in the state and contributes the most to the state’s GDP. The steel industry is also a major driver of economic growth in Chhattisgarh, as it attracts investment from other industries and creates jobs.
The textile industry is also a major industry in Chhattisgarh, but it is not as large as the steel industry. The textile industry employs a significant number of people in Chhattisgarh, but it does not contribute as much to the state’s GDP as the steel industry.
The IT & software industry is a growing industry in Chhattisgarh, but it is still relatively small. The IT & software industry employs a small number of people in Chhattisgarh, and it does not contribute as much to the state’s GDP as the steel industry.
The tourism industry is a growing industry in Chhattisgarh, but it is still relatively small. The tourism industry employs a small number of people in Chhattisgarh, and it does not contribute as much to the state’s GDP as the steel industry.