Endothermic energy is taking place. The sausage is being heated by the fire and absorbing the thermal energy.
Here is a list of some renewable resources, I hope these help answer the question, or help to answer it.
-ethanol
-hydropower
-geothermal power
-wind energy
-solar energy
-biomass
(Biomass refers to organic material from plants and animals)
The answer is B...
because any of the others could have an opinion based answer
A conductor of electricity