 
 <translate> Biomass is the total mass of organisms at a trophic level. Most living things are called organisms. Biomass is the total mass of living things at a trophic level.
So, the answer is (A). <hau> Biomass shine jimlar kwayoyin halitta a matakin trophic. Yawancin halittu masu rai ana kiransu halittu. Biomass shine jimlar yawan rayayyun halittu a matakin trophic. Amsar ita ce (A). 