What is the purpose of the .hta file extension?

The .hta file extension stands for HTML Application. It is specifically used to denote files that can execute HTML code as a standalone application. When an .hta file is run, it is processed by the Microsoft HTML Application Host, which allows the execution of scripts and the manipulation of system resources, similar to desktop applications. This capability enables developers to create GUI-based applications using familiar HTML and scripting languages such as JavaScript.

The other options, while relatable in context, do not accurately describe the function of .hta files. For instance, audio files are typically associated with formats such as .mp3 or .wav, while text documents usually use extensions like .txt or .doc. Executing virus scans involves specialized software and is not directly related to the .hta file's purpose. Thus, the most fitting description of the .hta file extension is its ability to open and run HTML programs as standalone applications.