I need more information to answer this
I would Choose D because A is not correct because the librarian doesnt do that kind of stuff they just help find books It cannot be B because The internet can always be sus and not always have what you are looking for Its not C Because of the same reason for why B is not the correct answer Hope this helped :D
Answer: The quality of being just; righteousness, equitableness, or moral rightness: to uphold the justice of a cause. rightfulness or lawfulness, as of a claim or title; justness of ground or reason: to complain with justice. the moral principle determining just conduct.