The mussel circulates its food through its system before eating it. Since the mussel lives in water and it food does as well, the mussel doesn't want to eat tons of water, so it needs to get rid of it as well as the other un-needed things.
The circulatory system would fail, and the entire organism would suffer.
------i took the test and at first i chose what the person above me said which was A, but i got it wrong. when i looked at the "review" to see which ones i got wrong, it showed that the correct answer is C.
