Answer:
The answer is A.
Step-by-step explanation:
Hydroelectric energy does not use energy from the sun, it uses it from the water. This would make B incorrect.
While oil is a non-renewable resource, it is used quite often. This makes the statement in C incorrect.
Although many countries do use it... Solar Energy is a renewable resource
The only option that is left is A. A is correct because combustion of biomass can replace fossil fuels in conventional power plants.
Hope that helps!