I want to know what is the exact reasoning (in detail) for the closure of this question. I also want to know what can be done (in regards to editing) to reopen the question.
Edit: This question was asked by another user, not me.
Since I'm already at it in the comments, I left a comment that clearly states why I closed that question.
The OP of that question has provided no data of what arguments they tried to use to convince the parents and how they went about using those arguments. All we know is that OP told parents, but OP left out the most important what they told and how they told, like every other question on this site seems to do.
Without knowing the arguments OP has to convince their parents, we'd also be running into the limits as set out in our help/on-topic: we cannot give you points to argue and tell you what to say.
Without those details that only the asker can provide, we cannot help them improve their interpersonal skills. We'd only be throwing mud at a wall, hoping something would stick (like I'm doing here now because I have no clue what part of the original comment you didn't get). Just like demanding explanations on meta about old abandoned questions (there has been no activity from the OP there, making this just another hit and run question), throwing that mud is a waste of effort that doesn't improve site quality.