In general, critical analysis is on-topic and can lead to great questions. The closed question, however, is not a good example of such a question. At the time it was closed the body of the question was
Does the movie "dark knight " portray the theme of imprisonment? If so how? And where is it shown in the film.
But what is meant by the "theme of imprisonment"? The question doesn't define that or attempt to give any examples from the film or other stories, which leaves the question open to interpretation as to what the asker means by the "theme of imprisonment". How figurative can an imprisonment be yet still fall under the asker's definition of "theme of imprisonment"? Is Harvey Dent's dependence on his coin flips a type of imprisonment which reflects this theme? Was Batman in some sense imprisoned by his affection for Rachel?
For comparison, one of the comments links to a similar question on Movies.SE. The body of that question (links removed) is:
According to Wikipedia, the main theme of The Dark Knight is escalation, such that each event lead to an escalation that results from the choices Batman and James Gordon make. A separate source said that if one were to start from the beginning the movie can be seen as sequence of small games with the first being the robbery scene.
The robbery scene being compared to that of the Pirate Game.
Is it possible that the primary theme is actually Game Theory? Since the actual escalation didn't occur until the end with the prisoner's dilemma and Harvey kidnapping Gordon's family? What is the main theme of The Dark Knight?
Here the theme of "escalation" is clearly defined, the question provides examples, and the asker shows some knowledge of the movie. That is a good critical analysis question. There's still room for interpretation for the answerers, but they have a clear definition of the proposed main theme to objectively argue for or against.
The question also has the confounding problem that it's a "give me teh codez" type of question. At the time it was closed it had the title
Need help on feedback on question
and the asker self-answered with
Anyone? Please.... need immediate help
Why would you need "immediate help" for a critical analysis question, unless it's a last-minute homework assignment? I'm not the only one who picked up on that. I'm not aware of any policies on this site for handling "give me teh codez" questions (we rarely get them), but on other SE sites such questions are routinely closed because they are not conducive to good Q&A.
Finally, the body of the question mentions The Dark Knight but was tagged with dark-knight-rises. Which movie was the asker wondering about?
In hindsight it probably would have been more accurate to close that question as "unclear what you are asking" due to (a) the tag/body discrepancy and (b) the unclear definition of "theme of imprisonment". But another user had voted to close as "primarily opinion-based", and that seemed to fit as well due to (b).