You are presented with the quiz "Eating something that contains what can kill directly and selectively?" 

But you don't know the answer, so you turn to your teacher to ask for hints. He says that "eating something that contains pollutants has a negative impact on an organism 's survival" and "pollution can kill living organisms directly and selectively, affecting biodiversity in the oceans". 

So, what's the best answer to the question?


 

   pollutants        