The correct answer is: d) Wind.
Assam has a large potential for wind energy. The state has an average wind speed of 6-7 m/s, which is sufficient for commercial wind power generation. The state government has also set a target of generating 1,000 MW of wind power by 2022.
Geothermal energy is the heat energy generated within the Earth. It is a renewable energy source, but it is not widely available. Assam does not have any significant geothermal resources.
Uranium is a radioactive element that is used to generate nuclear power. It is not a renewable energy source. Assam has some uranium reserves, but they are not large enough to be commercially viable.
Biofuel is a renewable energy source that is derived from organic matter. It can be used to generate electricity, heat, and transportation fuels. Assam has some potential for biofuel production, but it is not a major source of energy in the state.
Wind energy is the most promising renewable energy source in Assam. The state has the potential to generate a significant amount of wind power, and the government is supportive of the development of this industry.