The correct answer is D. Right click the column heading you want to delete and select delete from the shortcut menu.

To delete a column in Excel, you can follow these steps:

  1. Select the column heading you want to delete.
  2. Right-click the selected column heading.
  3. Select Delete from the shortcut menu.

The column will be deleted and the cells below it will move up to fill in the empty space.

Option A is incorrect because the Delete Row button is used to delete a row, not a column.

Option B is incorrect because the Insert Delete command is used to insert or delete rows, not columns.

Option C is incorrect because the Edit > Delete command is used to delete cells, not columns.