To ensure that the most important notes remain visible, users can do what?

Pinning the notes is the best way to ensure that the most important information remains visible. When notes are pinned, they are prioritized and displayed prominently within the interface, making them easily accessible and preventing them from getting lost among other notes. This functionality allows users to focus on critical information without having to sift through less important notes.

Highlighting notes, while useful for drawing attention to specific parts of the text, does not keep the entire note visible in a defined way. Deleting old notes removes information permanently, which may not be ideal for retaining necessary data. Archiving previous notes, although useful for organizing, still places those notes into a separate section that may not be readily visible, therefore losing the immediacy of access that pinning offers.