Which choice lists the elements that are necessary for a CGI session?

The correct choice includes the key elements that facilitate a Common Gateway Interface (CGI) session. A CGI session occurs when a web server processes requests from a client through the execution of a CGI script, typically in response to user actions, like submitting a web form.

The elements of a CGI session are fundamentally tied to how the interaction between the client (user) and the server takes place. A web browser serves as the client that initiates the request by submitting data, often through an HTML form. The CGI script then processes this data, performing the necessary actions based on the user's input, such as querying a database or generating dynamic content. Finally, the web server is responsible for handling the request and executing the CGI script through a CGI interpreter, which allows the server to run the script and send back the appropriate response to the web browser.

In this context, the presence of a web form is also crucial, as it allows users to input the data that will be handled by the CGI script. This entire workflow encapsulates the essence of how CGI sessions operate, making the inclusion of the web browser, CGI script, web form, and web server with a CGI interpreter essential to the process.