What method can be used to change the index of an existing column in a...

The SetOrdinal method of the DataColumn class can be used to change the index or position of an existing column in a datatable. The method takes an integer argument that specifies the new ordinal or position of the column. For example, to move the first column to the last position, one can use: yourDataTable.Columns(0).SetOrdinal(yourDataTable.Columns.Count - 1). (UiPath Automation Developer study guide)