The most fair and effective counterclaim to the argument in the passage is B) healthy ecosystems are forever destroyed when forests are cut down, which must be done in order to produce biomass from wood.
This counterclaim effectively challenges the argument about biomass by highlighting the environmental impact of sourcing biomass from forests, which poses a significant concern in the overall sustainability of biomass as an energy source. It addresses a critical aspect of the argument—ecological balance—providing a strong environmental rationale against biomass use.