Read this introduction to a magazine article.Headphones are everywhere! People are locked in their worlds of downloaded music, relying on their private music libraries for entertainment. In doing so, they are ignoring a diverse world of radio offerings that could enrich and entertain. Local radio stations provide music and news, while National Public Radio (NPR) broadcasts discourse and entertainment for all tastes.

The introduction argues that people should explore radio instead of listening only to downloaded music. It mentions local stations and NPR as sources of varied music, news, discourse, and entertainment, so the article would most likely give examples of radio programs. The other choices focus on headphones, downloads, or radio history, none of which is the introduction’s main focus.

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