The main source of power generation in Meghalaya is:

Hydropower
Thermal power
Solar power
Wind power

The correct answer is: a) Hydropower.

Hydropower is the main source of power generation in Meghalaya. The state has a large number of rivers and streams, which are ideal for hydropower generation. In 2019, hydropower accounted for 97% of Meghalaya’s electricity generation.

Thermal power is the second-largest source of power generation in Meghalaya. Thermal power plants use coal or natural gas to generate electricity. In 2019, thermal power accounted for 2% of Meghalaya’s electricity generation.

Solar power is a renewable energy source that uses the sun’s energy to generate electricity. Solar power is a small but growing source of power generation in Meghalaya. In 2019, solar power accounted for 1% of Meghalaya’s electricity generation.

Wind power is a renewable energy source that uses the wind’s energy to generate electricity. Wind power is a small but growing source of power generation in Meghalaya. In 2019, wind power accounted for less than 1% of Meghalaya’s electricity generation.