How can you tell if a comment has already been added to a positive/negative button?

The correct answer highlights an important visual cue within the Epic Inpatient Module interface. When a comment has already been added to a positive or negative button, the button being underlined serves as a clear indicator that it contains additional information or context, such as a comment. This visual element is essential for users, as it allows them to quickly identify which buttons have associated comments without needing to click on each one or perform additional actions.

Understanding the visual cues in the user interface is crucial for enhancing workflow efficiency. Users benefit from immediately knowing if a button has been remarked upon without unnecessary exploration. The underline serves this purpose effectively, allowing users to focus on important aspects of the interface without distraction.

The other options may offer useful features, like color changes or notifications, but they do not specifically indicate the presence of comments in the same direct manner as underlining does.