1, a qualified paper must have a core statement, which is the explanation of the argument, the most important point of the full text, the starting point of the paper, and the bridge between the introduction and the core content of the paper, often at the end or abstract of the introduction.
The main idea of the paper is to state in one sentence what you want your paper to show and what you want your readers to believe after reading it. This is the basis of the whole work, telling readers what you want to achieve with the paper and what you want to prove or refute. I suggest you read more papers on Palm Bridge and see how other people's main arguments are written.
Although the main idea is a short sentence, it is the most difficult sentence in the whole paper. Only by reading a lot of literature and supporting relevant data can you write your own theme. Only in this way can you confidently tell the reader what you intend to prove. But we should make it clear that the argument is not the theme of the paper, but the explanation or viewpoint within the theme. This is a concrete proposition you are putting forward, and you will use the rest of the paper to demonstrate it. The analysis, debate, comparison and contrast in your paper should be based on clear points. This shows your position, and every part of the paper needs to take this position into account in some way.