Which of the following data update settings for a single score visualisation shows the timestamp of when the score was last updated?

The option indicating "Show score update time" is the correct choice because it directly relates to displaying the timestamp for when the score was last refreshed. This setting is specifically designed to provide the user with visibility on the recency of the data, which is essential for understanding how current the information being represented is.

This is particularly useful in scenarios where timely data is crucial for decision-making. By activating this setting, users can see the last updated time, which helps them gauge the relevance of the score presented. It enhances transparency, allowing users to assess whether the data reflects the latest developments.

The other options address different functionalities: the real-time update feature pertains to continuous data refresh, ensuring scores are updated live; the background refresh interval sets a specific time interval for data updates in the background, but does not communicate the last update time; and following filters affects how data is populated in the visualization based on selected filters rather than showing when the score was last updated. Each of these options serves distinct purposes but does not fulfill the requirement of displaying the timestamp of the last update as effectively as the designated correct answer.