The chyron displayed during a news broadcast is MOST likely to show subtitles for the news.
A chyron displayed during a news broadcast is most likely to show subtitles for the news. To confirm this answer, you can observe news broadcasts across various channels and see if there is a consistent presence of subtitles during the broadcast. Additionally, you can do some online research about the purpose of a chyron in a news broadcast and often find that it is used to display subtitles or key information related to the news being reported.