The correct answer is C. Gaya-Nalanda-Bodhgaya-Sasaram area.
Bhangar soil is a type of soil that is found in the Gangetic Plain. It is a deep, well-drained soil that is rich in nutrients. It is ideal for growing rice, wheat, and other crops.
The Bhangar soil in Bihar is found in the Gaya-Nalanda-Bodhgaya-Sasaram area. This area is located in the central part of the state. It is a fertile region with a long history of agriculture.
The Bhangar soil in this area is a result of the deposition of sediments from the Ganges River. The sediments are rich in nutrients, which makes the soil ideal for growing crops.
The Bhangar soil in Bihar is a valuable resource. It is used to grow a variety of crops, including rice, wheat, and sugarcane. The soil is also used to raise livestock.
The Bhangar soil in Bihar is under threat from a number of factors, including deforestation, overgrazing, and soil erosion. These factors are causing the soil to become degraded.
It is important to protect the Bhangar soil in Bihar. This can be done by planting trees, reducing grazing, and preventing soil erosion. By protecting the soil, we can ensure that it will continue to be a valuable resource for future generations.
The other options are incorrect because they do not accurately describe the location of the Bhangar soil in Bihar.