What does the "More actions" (three dots) icon in Slack allow users to do?

The "More actions" (three dots) icon in Slack provides users with additional functionality related to messages and content within their conversations. By clicking this icon, users can access various options that enhance their interaction with specific messages. These options often include reporting messages that may violate community guidelines, reacting to messages in certain ways, or performing other actions such as saving messages or sharing them to different channels or users.

The other options relate to functionalities that are not typically associated with the "More actions" icon. Following members, changing workspace settings, and creating new channels are separate actions found elsewhere in the Slack interface and do not fall under the contextual menu provided by the three dots next to messages. Hence, the correct interpretation of the "More actions" icon is that it expands user capabilities related to messages specifically, making option B the appropriate choice.