In a web server, a common gateway interface (CGI) is MOST often used as a(n):

A. consistent way for transferring data to the application program and back to the user.

The common gateway interface (CGI) is a standard way for a web server to pass a users request to an application program and to move data back and forth to the user. When the user requests a web page (for example, by clicking on a highlighted word or entering a web site address), the server sends back the requested page. However, when a user fills out a form on a web page and submits it, it usually needs to be processed by an application program. The web server typically passes the form information to a small application program that processes the data and may send back a confirmation message. This method, or convention for passing data back and forth between the server and the application is called the common gateway interface (CGI). It is part of the webs HTTP protocol.