If you look at turbidity standards online you'll see that 400 NTU is actually not that high. Also 5 NTU is amazingly clear for where a river meets the ocean.
Edit: Changed my mind, 400NTU is really turbid.
I don't quite understand how this would work since B is implying that it was just a reaction between the two monomers, not the formation of a polymer? That's just how it appears to me. Even though I see how D might not make sense also.
I thought that because it said 'or' you had to argue one or the other...
Reading this and seeing everyone say it was easy is making me panic. Mod A was fairly simple, Mod B was generic but I didn't write much, and Mod C for Politics I didn't like plus I realise now I didn't exactly 'evaluate'.