I have asked a question about what to do when coding feel boring and the same all over again. All the answer can be for a community point of view right, so there is no one answer right, but the right question is a little sum of all the answer, what can i do in this case ?
Some questions on Programmers.SE do not have just one correct answer and that is okay. I would just leave it as is.
Alternatively, if one answer stands out above all others (with more information, detail, better reasoning, etc), I would accept that one. You can also use upvotes as a guide and accept the answer with the highest number of votes, although the most popular answer may not be the most useful, so use your best judgement there.
Well I've never seen a need to close a question, maybe you can edit your question by adding a note where you describe the situation. But as far as I know, there could be always question with no right answer.
I believe a good solution is to create a community wiki answer that sums up all the answers and accept that one.