What term refers to the act of broadcasting live video or audio via the Internet?

The correct answer is "Live Stream." This term specifically refers to the process of broadcasting live video or audio over the Internet, allowing audiences to view or listen to content in real time as it happens. Live streaming is commonly used for events such as concerts, gaming, webinars, and news broadcasts, enabling immediate engagement with viewers and creating a dynamic interaction.

While "Web cast" can sometimes refer to similar broadcasting types, it is usually associated with a more formal presentation or seminar rather than live, spontaneous content. "Podcast" is a term that refers to pre-recorded audio or video content that can be downloaded and consumed on demand, rather than live streaming. "Streaming" is a broader term that encompasses various forms of delivering audio and video over the Internet, but it does not specifically denote live content. Thus, "Live Stream" is the most accurate term for the act of broadcasting live video or audio online.