unless something changed pretty sure its labeled under Miscellaneous with 7sage.

Really confused about this one, because the stimulus says S CAN harm aquatic life, doesn't necessarily mean that it will harm aquatic life. What if, even if one brand (Ecological friendly vs. notEF) has more S than the other, BUT all of the S just doesn't harm the aquatic life? Then the quantity of S wouldn't really matter. How can we just overlook the "can"? because I feel we must read "can" as "will" in order for (A) to weaken it.