What occurs when you select the column header in a table visual in Microsoft Power BI?

When you select the column header in a table visual in Microsoft Power BI, the primary action that occurs is sorting the data within that column. Initially, selecting the column header will sort the data in ascending order, meaning that it arranges the values from smallest to largest (for numerical data) or alphabetically (for text data). If you select the same header again, it toggles the sort order to descending, arranging the values from largest to smallest or in reverse alphabetical order.

This functionality is crucial for users who need to quickly analyze or compare data within a specific column. It allows for intuitive interaction with the data displayed and enhances the overall user experience by enabling rapid insights without having to create separate visualizations or apply complex filters.

Understanding this mechanism is vital for effectively utilizing Power BI to gain insights from your data. Other options do not accurately represent the functionality tied to selecting a column header in table visuals, as they suggest different interactive features that are not part of the basic column sorting action.