The correct answer is: b) Barak Valley.
Silchar is a city in the Indian state of Assam. It is the headquarters of Cachar district and the Barak Valley. The city is located on the banks of the Barak River, about 300 kilometers (190 mi) south of Guwahati, the state capital.
Barak Valley is a geographical region in the Indian state of Assam. It is located in the south-eastern part of the state, and is bounded by the states of Manipur and Mizoram to the south, the state of Tripura to the east, and the Brahmaputra Valley to the north. The Barak Valley is divided into three districts: Cachar, Karimganj, and Hailakandi.
The Barak Valley is a major rice-producing region in India. It is also home to a number of tea gardens. The region is also known for its natural beauty, with its hills, forests, and rivers.
The Barak Valley is a linguistically diverse region, with people speaking a variety of languages, including Bengali, Assamese, Manipuri, and Tripuri. The region is also home to a number of ethnic groups, including the Kuki, Mizos, and Tripuris.
The Barak Valley is a vibrant and dynamic region, with a rich history and culture. It is a popular tourist destination, and is home to a number of educational institutions and industries.