Sadie helman runs a web site for amateur snowboarders. she likes to post videos and music related to snowboarding on her site as well as interviews with different snowboarding professionals. sadie should use which element to create a background sound that follows xhtml specifications?

In order for Sadie to provide a background sound on her videos, the element she needs to use is the mp3. It is because whenever sound is provided in videos and formats in music, it is best to use the format of mp3 because this is the usual format used universally for music rather than other formats that are only used for a specific kind.