Maybe I don’t understand how it’s supposed to work, but the very first question I was given had three choices and none of them were correct. What are you supposed to do then?
That's when you hit "uh..." and leave a note with details. In an effort to keep things simple on a small screen it doesn't include every possible option. You can read the wiki to find the best way to tag it. https://wiki.openstreetmap.org/
Most of the time you can leave a note. Do you get an "Uh..." option?