Answer:
roaring
Explanation:
Okay, this is kind of weird because it's subject to opinion, so if this is wrong, I'm very sorry, but:
Fast-moving is a very slow adjective, "After the storm, the creek became a fast-moving river." To me, that's the worst option.
But that's the only one that's definite:
So, the thing is, rapid and swift are basically the same thing, and why would you put two that are nearly the same, so that's my only evidence that roaring is right, also, roaring sounds better to me
sorry I couldn't be more of a help:(
