How to display the correct answers from the server before the code itself shows them to you?

Question

Web development

There is a site that has tests. The html code is as secretive as possible. So much so that .js scripts are not connected there, and no button actions are called there.
Here is an example that I spied through the raster mode ...

At the beginning of the test, when you answer the tasks, the same code and page address as when you finished the test and you are shown the answers. This means that somewhere in the code of js files that contain requests to the server (most likely, do they store them like that), which means that at the beginning of how you started performing these tests, you can request responses from the server and display them using some some log to the console and answer with those answer options that you know for sure that they are correct. The only question left is what requests the server makes to check the correctness of the answer, and use the developer console to watch them with some kind of alert or print.