This opens the Identify tool that can be used to identify and list features on the map. Features are listed categorized by layer. Various functionalities can be applied to features selected in the list.
 

Sketch

Different types of sketches are provided for selection in the map.

Targets

The feature types to which the selection should refer can be filtered. It is possible, for example, to identify only annotations or only points and lines.

Functions

All functions are applied to selected features. Both single and multiple selection is possible.

The map section can be moved. Features can be zoomed in or highlighted on the map. Features can be selected or removed in the map.

Furthermore, it is possible to specifically switch on and off the visibility of the layers containing the selected features. I.e. in unclear places the map content can be changed without having to search for the layers in the table of contents. Another button opens the ArcGIS Pro Attributes panel. To open the ArcGIS Pro Attributes panel, at least one feature in the list must be selected by means of Select in the map.