- Statement A is correct: Biomass (organic matter) is renewable because it can be replenished relatively quickly through natural processes like plant growth. - Statement B is correct: Biogas is produced through anaerobic digestion, the decomposition of organic matter by microorganisms in the absence of oxygen. This process is used in biogas plants. - Statement C is correct: Using organic waste to produce biogas reduces the amount of waste that would otherwise pollute soil and water bodies. The digested slurry (digestate) can also be used as a nutrient-rich fertilizer, replacing chemical fertilizers and improving soil health.