Answer :
There exist a food web where oats are consumed by rats and crickets. Thus, the answer to the question above is letter "B. Oats". Aside from that, we know for a fact that oat is one of the primary source of food of many consumers. As basic food source, its supply should be abundant.
Answer:
The correct answer would be B) oats.
Biomass refers to the total mass or weight of organisms present at particular trophic level.
The amount of biomass decreases as we move above the trophic levels in food chain, especially in terrestrial food chain.
Oats being the producers are present at the first trophic level.
Thus, it would have the maximum biomass in the given food web.