Question

When starting an edit session in ArcMap the ArcGIS user is unable to locate the geodatabase feature class in the Start Editing list. Why does the layer fail to show up in the Start Editing list?

A. The data layer is set as unselectable in the Table of Contents
B. The data loaded in the map is from a read-only source
C. The data is in a different spatial reference than the data frame
D. A spatial index must first be built for the data

Answer 1

The data loaded in the map is from a read-only source.

Step-by-step explanation:

The correct answer is B. The data loaded in the map is from a read-only source. When starting an edit session in ArcMap, the Start Editing list will only display feature classes that are editable. If the data loaded in the map is from a read-only source, such as a shapefile or a feature class in a read-only geodatabase, it will not show up in the Start Editing list.