System.Object
   ESRI.ArcGIS.Client.BACore.Client.BAClient
      ESRI.ArcGIS.Client.BACore.Client.AbstractClient
         ESRI.ArcGIS.Client.BAO.Tasks.BAOnlineClient
   ESRI.ArcGIS.Client.BACore.Client.BATask<TResult,TEventArgs>
      ESRI.ArcGIS.Client.BACore.Client.AbstractTask
         ESRI.ArcGIS.Client.BAO.Tasks.BAOnlineTask<TResult>
            ESRI.ArcGIS.Client.BAO.Tasks.BAOnlineBatchTask
            ESRI.ArcGIS.Client.BAO.Tasks.BAOnlineGenericTask
            ESRI.ArcGIS.Client.BAO.Tasks.Geofence.GeofenceInfoTask
            ESRI.ArcGIS.Client.BAO.Tasks.StdGeographies.ReturnStdGeographyTask
            ESRI.ArcGIS.Client.BAO.Tasks.StdGeographies.StdGeographiesByAttributesTask
            ESRI.ArcGIS.Client.BAO.Tasks.StdGeographies.StdGeographiesFromExtentTask
            ESRI.ArcGIS.Client.BAO.Tasks.Utilities.GetDatasetsTask
            ESRI.ArcGIS.Client.BAO.Tasks.Utilities.GetReportTemplatesTask
            ESRI.ArcGIS.Client.BAO.Tasks.Utilities.GetStandardGeographyLevelsTask
            ESRI.ArcGIS.Client.BAO.Tasks.Utilities.GetSummarizationsTask
         ESRI.ArcGIS.Client.BAO.Tasks.BAOTask<TResult,TEventArgs>
            ESRI.ArcGIS.Client.BAO.Tasks.Reports.BenchmarkReportTask
            ESRI.ArcGIS.Client.BAO.Tasks.Reports.SummaryReportsTask
            ESRI.ArcGIS.Client.BAO.Tasks.TradeAreas.DriveTimeTask
            ESRI.ArcGIS.Client.BAO.Tasks.TradeAreas.SimpleRingsTask

Reference

ESRI.ArcGIS.Client.BAO Assembly