Final answer:
An ArcGIS user can update the zoning information for a parcel by selecting the zoning code from a drop-down list in the Attributes window.
Step-by-step explanation:
When editing a feature class in ArcGIS, the user can update the zoning information for a parcel by selecting the zoning code from a drop-down list in the Attributes window. This is possible because the zoning information is stored using a coded value domain, which associates different values with their corresponding codes or descriptions. By selecting the zoning code from the drop-down list, the user can easily update the zoning information for the parcel.