A wildlife sanctuary in Mizoram specifically established for the protection of bears is:

Ngengpui Wildlife Sanctuary
Lengteng Wildlife Sanctuary
Thorangtlang Wildlife Sanctuary
Blue Mountain Wildlife Sanctuary

The correct answer is: b) Lengteng Wildlife Sanctuary

Lengteng Wildlife Sanctuary is a wildlife sanctuary in Mizoram, India. It was established in 1978 to protect the endangered Asiatic black bear. The sanctuary is located in the southern part of Mizoram, in the Lunglei district. It covers an area of 1,000 square kilometers.

The sanctuary is home to a variety of wildlife, including the Asiatic black bear, the Bengal tiger, the Indian elephant, the gaur, the sambar, the chital, the wild boar, and the barking deer. It is also home to a variety of birds, including the great hornbill, the rufous-necked hornbill, the wreathed hornbill, the great pied hornbill, the scarlet minivet, the green imperial pigeon, and the white-bellied heron.

The sanctuary is a popular tourist destination. Visitors can go on jungle safaris, bird watching, and trekking.

The other options are incorrect because:

  • Ngengpui Wildlife Sanctuary is a wildlife sanctuary in Mizoram, India. It was established in 1992 to protect the endangered brow-antlered deer. The sanctuary is located in the northern part of Mizoram, in the Aizawl district. It covers an area of 200 square kilometers.
  • Thorangtlang Wildlife Sanctuary is a wildlife sanctuary in Mizoram, India. It was established in 1980 to protect the endangered clouded leopard. The sanctuary is located in the central part of Mizoram, in the Champhai district. It covers an area of 500 square kilometers.
  • Blue Mountain Wildlife Sanctuary is a wildlife sanctuary in Mizoram, India. It was established in 1986 to protect the endangered hoolock gibbon. The sanctuary is located in the southern part of Mizoram, in the Lawngtlai district. It covers an area of 1,000 square kilometers.