What is the role of a feature dataset in ArcGIS Pro?

A feature dataset in ArcGIS Pro serves as a container that stores and manages related feature classes. This organization allows for a logical grouping of spatial data that share a common coordinate system and spatial reference, making it easier to handle and analyze geospatial data that is interconnected in some way. For instance, if you have multiple feature classes representing different aspects of a geographical area, such as roads, rivers, and land parcels, placing them within a feature dataset can help maintain their relationships and facilitate operations that involve the entire dataset.

The other options do not accurately reflect the primary function of a feature dataset. Storing layer definitions refers to the storage of properties and symbology of layers rather than the data itself. Performing spatial analysis is a task typically executed within the context of geoprocessing tools or functionality found in ArcGIS, rather than a specific data storage method. Lastly, exporting data to different formats relates to data management and transfer, not the purpose of a feature dataset. Thus, the correct understanding is that feature datasets are primarily about organizing and managing related geographic feature classes effectively.