Which option below most likely describes the nature of the pollutant and the trophic levels of each of the three mysterious species?

The nature of the pollutant is that is will be accumulated in the higher trophic level. this phenomenon is called biomagnification. this explains why shark and tuna has a high level of mercury.let say that the number of pollutants  accumulated is highest at species c, medium at species a and lowest at species b.then, species b would be the producer because it accumulates the lowest toxin. species a is the primary consumer(herbivore). species c is the secondary/tertiary consumer(carnivore).