Answer:
C. Toxic byproduct would result from combustion.
Step-by-step explanation:
Toxic byproducts would result from combustion is the most likely negative result of converting from hydrogen fuel cells as the primary energy source for powering vehicles to biomass energy. While biomass energy can be a renewable source of energy, the combustion of biomass can produce harmful pollutants and greenhouse gases, such as carbon monoxide and particulate matter. Additionally, access to biomass is limited and the costs of producing and distributing biomass can be high, which may impact the feasibility and efficiency of using biomass as a primary energy source. The efficiency of using biomass as an energy source is also lower than that of hydrogen fuel cells, which could lead to a decrease in vehicle performance and increased maintenance costs.