Sikkim has significant potential for generating:

Hydropower
Solar energy
Wind power
All of the above

The correct answer is: d) All of the above.

Sikkim has significant potential for generating hydropower, solar energy, and wind power.

Hydropower is the most developed renewable energy source in Sikkim, with a total installed capacity of 1,200 MW. The state has a number of large hydropower projects, including the Teesta III Hydroelectric Project, the Teesta IV Hydroelectric Project, and the Rangit Hydroelectric Project.

Solar energy is also a promising renewable energy source in Sikkim. The state has an average annual solar radiation of 5.5 kWh/m2/day, which is higher than the national average of 4.5 kWh/m2/day. The state government has set a target of installing 100 MW of solar power by 2022.

Wind power is another potential renewable energy source in Sikkim. The state has an average wind speed of 5-7 m/s, which is suitable for wind power generation. The state government has set a target of installing 50 MW of wind power by 2022.

The development of renewable energy in Sikkim has a number of benefits. It can help to reduce the state’s dependence on imported energy, improve air quality, and create jobs.