Answer: b. sugarcane
Explanation: Biomass is the organic matter obtained from plants or animals and used as a fuel, especially in a power station for the generation of electricity.
Biomass is a renewable source of energy which can be replenished time and again.
Sun is a renewable source but not obtained from plants or animals.
Natural gas mainly consists of methane and is not a renewable source of energy.
Water is not organic matter.
