For pity’s sake, will someone please explain this to me in an understandable (by an idiot) manner? I’ve read and re-read the goddam Chicago Manual of Style, and I’ll be jiggered if I can make head or tail out of it.
For example: “There are many hats that she might have worn,” or, “There are many hats which she might have worn.” Or, “It was a role that she’d always wanted to play” vs. “It was a role which she’d always wanted to play.”
Haaalp!