How can Robert verify the ArcSDE geodatabase versioning information of a layer's feature class?

Selecting the List by Sources button allows Robert to verify the ArcSDE geodatabase versioning information of a layer's feature class because this option provides a detailed view of the data sources used within the map document, including the connection to the geodatabase and its versioning setup. When using this view in ArcMap, it displays pertinent information about each layer's source dataset and its characteristics such as whether or not versioning is enabled.

This option stands out as particularly useful in understanding the configuration of the feature class, including its versioning status, which is essential for determining how to manage edits and access the correct data in a multi-user environment. It can help him see if the feature class is registered as versioned, which is vital for simultaneous edits made by multiple users in a geodatabase.

The other choices do not provide the same level of detail regarding versioning information. While they may offer context or other layers of information, they lack the specific functionality to display versioning details directly related to the feature class in question.