I assume it's to stop spoilers. and is that written after a question is asked, or while the story has been already created?
It happens after each chapter. For example - in the first chapter MC couldn't understand a word everyone was saying in the world she was teleported/summoned into. The next chapter she could. (After waking up.) When the third was about to be introduced it posed a FAQ that people had obviously questioned/pointed out; "How can she suddenly understand people." and instead of explaining anything in the third chapter she gave a list of four answers and left it as a "choose your own explanation." Which is just stupid and lazy.
The author also gives out "previews" that semi-spoil the up and coming chapters too.
The author is so lazy with this. When someone points out/asks them to explain a plot inconstancy they make a list of 4 answers and leave it as a "Eh, choose whichever since I cba..."