The correct answer is: a) Mayurbhanj
Mayurbhanj is the largest district in Odisha, India. It is located in the western part of the state and has an area of 30,761 square kilometers. The district is bordered by Jharkhand to the north, Chhattisgarh to the east, Keonjhar district to the south, and Sundargarh district to the west.
Mayurbhanj is a hilly district with a diverse landscape. The district is home to the Eastern Ghats, which are a mountain range that runs along the eastern coast of India. The district also has a number of rivers, including the Brahmani River, the Baitarani River, and the Subarnarekha River.
Mayurbhanj is a tribal district with a large population of tribal people. The district is home to a number of tribal groups, including the Santals, the Mundas, and the Oraons.
Mayurbhanj is a popular tourist destination. The district is home to a number of tourist attractions, including the Simlipal National Park, the Dalma Wildlife Sanctuary, and the Baripada Palace.
The other options are incorrect because they are not the largest districts in Odisha.
- Kalahandi is the second largest district in Odisha, with an area of 28,223 square kilometers.
- Ganjam is the third largest district in Odisha, with an area of 26,804 square kilometers.
- Koraput is the fourth largest district in Odisha, with an area of 20,725 square kilometers.