One of the most frequently tricky dilemmas I find when writing and editing is finding the best pronoun, especially when the choice comes down to one of: that, which, it, and this.
I have noticed that some references mention American English distinguishes between that for restrictive uses and which for nonrestrictive uses, but that is rarely observed in British English.
That feels quite unnatural to me, my native language is British English, but I can see potential benefits from doing so.
I want to ask authors for examples where making these kinds of choices was difficult, what did they eventually decide? And why?