Which statement is true about the Cisco DNA Center Intent API endpoints?The API endpoints accept and return HTTP messages that contain JSON documents or payloads.The API endpoints accept and return JSON messages that contain HTTP documents or payloads.The API endpoints accept and return JSON messages that contain REST documents or payloads.The API endpoints accept and return REST messages that contain JSON documents or payloads.

The statement that is true about the Cisco DNA Center Intent API endpoints is: "The API endpoints accept and return HTTP messages that contain JSON documents or payloads."

This is because API endpoints typically communicate via HTTP (Hypertext Transfer Protocol) messages. These messages can contain data in various formats, one of the most common being JSON (JavaScript Object Notation). JSON is a lightweight data-interchange format that is easy for humans to read and write and easy for machines to parse and generate.

The other statements are incorrect because they suggest that JSON messages contain HTTP documents or that REST documents or messages contain JSON, which is not accurate. HTTP and REST are protocols used for communication, while JSON is a data format.