The correct answer is: East Singhbhum.
East Singhbhum is a district in the Indian state of Jharkhand. It is the second most populous district of Jharkhand after Ranchi. The district is located in the southern part of the state and is bordered by the districts of Ranchi, Seraikela Kharsawan, West Singhbhum, and Odisha. The district is named after the river Singhbhum, which flows through it.
The district has a population of over 3.5 million people. The majority of the population is Hindu, followed by Muslims and Christians. The district is home to a number of tribal groups, including the Santhals, Mundas, Oraons, and Ho.
The district is a major industrial hub and is home to a number of steel plants, mines, and power plants. The district is also a major agricultural producer and is known for its rice, wheat, and maize crops.
The district is home to a number of tourist attractions, including the Dalma Wildlife Sanctuary, the Jagannath Temple, and the Netarhat Hills.
The other options are incorrect because:
- Dhanbad is the third most populous district of Jharkhand after Ranchi and East Singhbhum.
- Bokaro is the fourth most populous district of Jharkhand after Ranchi, East Singhbhum, and Dhanbad.
- Chatra is the fifth most populous district of Jharkhand after Ranchi, East Singhbhum, Dhanbad, and Bokaro.