How do definition queries affect the appearance of a layer in ArcGIS Pro?

Definition queries are a powerful feature in ArcGIS Pro that allow users to filter the features that are displayed in a layer based on specified criteria. When a definition query is applied, only the features that meet the defined conditions are visible on the map. This capability is particularly useful for focusing on a subset of data within a larger dataset, such as showing only specific attributes or records that are relevant to a particular analysis or presentation.

For example, if you have a layer of cities and you want to display only those cities with a population over a certain threshold, you would set a definition query to filter the features accordingly. This results in a more streamlined view that highlights the specific data of interest, making it easier to analyze and interpret the information.

The other options describe different functionalities in ArcGIS Pro. Layout settings pertain to the arrangement of map elements in a layout view, the coordinate system relates to geographical reference and projection settings, and symbology styles are concerned with how features are visually represented, such as colors or shapes. However, none of these options relates to filtering the displayed features; this unique capability is the essence of what a definition query provides.