Which type of power plant requires maximum expenditure: a Hydel power plants b Nuclear power plants c Thermal power plants d Gas based power plants

Option A

Hydel Power Plant

As per my experience 

I agree with the experts "A"

Agree with Mr. Basit

c

Hydel Power Plants !!

a Hydel power plants

The initial cost for Hydel Power Plant is very high

  Choice - a ) Hydel power plants ) 

Gas Power Plant

Ur asked which one is Maximum expenditure plant. Expenditure in power plants are consider in following terms Initial cost,maintenance cost,disposal cost. In Hyde power plant initial cost is high, and maintenance & disposal cost is low. In nuclear power plant is initial & disposal cost is high. maintenance cost is low compare to thermal power plant. But thermal power plant initial, maintenance & disposal cost is high. gas power plant initial & disposal cost is low. So the answer is C = thermal power plant