The correct answer is C. Ogg
Step-by-step explanation:
Ogg is a multimedia format used for different types of multimedia files including audios. This format was first developed in 1993 but has changed during the time; besides this, the use of this format has become popular. Indeed, even today many videos and audios use this format; moreover, content with this format can be identified due to the extension .ogg at the end of the multimedia file. This implies it is Ogg is the format used for audio files. On the other hand, jpg is used for images, AVI is used for multimedia files that combine audio and video, and XML is used for a markup language (encoding of files).