Technically, it's the label that is used for accessibility.  In Studio's Simple Editor, this is the text that is surrounded by two pairs of angle brackets.  But otherwise?  I'm not sure.  But I just thought it would be good to note this somehow, since if they don't get any "Question" but clearly see text appearing above the choices or entry field, they may be wondering why they don't get any "Question".   They should be directed somewhere to the need to actually provide the accessibility label.