For displaying read-only text in rich text format, which component is used?

The correct choice for displaying read-only text in rich text format is a Paragraph component. The Paragraph component is specifically designed to format and display text in a visually appealing manner, allowing for rich text features such as bold, italics, and different font sizes. This makes it ideal for scenarios where you want to present text to the user without allowing them to edit it.

In contrast, the other components serve different purposes. The Field component is typically used for input and interaction, allowing users to enter or modify data. The Section component can be used to organize various UI elements on a screen, including fields and paragraphs, but it does not specifically focus on rich text display. Lastly, Flow action components are used to define the actions that can be taken in a process flow and are not used for text display. Therefore, the Paragraph component is best suited for displaying static textual content formatted in rich text format.