Which purpose does a byline serve it creates the message being shared it tells you what kind of media is used as summarizes the information or a identifies the source of the information

A byline serves to identify the source of the information. It gives credit to the author or journalist who wrote the article, report or news story, and helps readers to recognize the writer's style and expertise. Bylines can also provide context and establish credibility for the information presented, as readers may trust certain sources more than others based on their reputation, experience and track record.

A byline serves the purpose of identifying the source of the information, as it typically includes the author's name and sometimes their title or affiliation.