Can you explain what you meant by "free choice"? What does the word "exactly"/"præcist" have to do with choice or being free? I am not a native speaker of any Scandinavian language so this seems like a new concept for me!
I mean like, if they could use both "god" and "godt", for example, they tend to use the "godt". I'm not a native dane either though, so I'm not 100% sure if that's the reason, I just know that they do use the -t with things like "præcist" etc