The correct answer is D. Manipur.
Loktak Lake is a large freshwater lake in Manipur, India. It is the largest freshwater lake in northeastern India and the second largest in India after Wular Lake in Jammu and Kashmir. The lake is home to a variety of plant and animal life, including the endangered sangai deer.
The lake is facing a number of environmental problems, including pollution, deforestation, and encroachment. These problems are threatening the lake’s ecosystem and the livelihoods of the people who depend on it.
The lake is polluted by sewage, industrial waste, and agricultural runoff. This pollution is killing fish and other aquatic life and making the water unsafe for drinking or bathing.
Deforestation is also a major problem. Trees are being cut down to make way for agriculture, development, and fuelwood. This deforestation is leading to soil erosion and the loss of habitat for wildlife.
Encroachment is another problem. People are building houses and other structures on the lake’s shores. This encroachment is reducing the size of the lake and making it more difficult for fish to spawn.
These environmental problems are threatening the lake’s ecosystem and the livelihoods of the people who depend on it. It is important to take steps to protect the lake and its resources.
Option A is incorrect because Orissa is a state in eastern India.
Option B is incorrect because Assam is a state in northeastern India.
Option C is incorrect because Kerala is a state in southern India.