Anna needs to leave a message for a collaborator about a specific paragraph in a document.Which of the following methods is the best way for her to communicate with her collaborator?

A) Enter the desired message in a comment attached to the paragraph.
B) Enter the desired message in the header of the document.
C) Enter the desired message in a text box placed next to the paragraph.
D) Enter the desired message as a document property.

Adding a comment to the paragraph is the best way to communicate a specific message about that paragraph to a collaborator. This allows the collaborator to easily see the comment and respond to it, and it also keeps the comment tied to the specific paragraph for future reference. The other options, such as adding the message to the header or as a document property, do not provide the same level of clarity and context for the collaborator.