What feature would you use to add a heading and bullets to text in a chat?

Using the format feature is the appropriate choice for adding a heading and bullets to text in a chat. This feature allows users to enhance the text visually by changing fonts, adding bullet points, and modifying other text attributes. By leveraging formatting options, you can structure your message effectively, making it clearer and more organized for your audience.

Other functionalities in chat, such as replying, adding attachments, and mentioning users, serve different purposes. For example, replying is meant for responding to specific messages in the chat, adding attachments allows for sharing files and documents, and mentioning users is mainly for drawing their attention within the conversation. These functions, while useful, do not provide the capabilities necessary for altering text presentation in terms of headings or bulleting. Therefore, the format feature is the essential tool for this particular task.