To unhide column A in Excel, you can follow these steps:
1. **Select the Columns on Either Side of Column A:**
- Click on the column letter header to the left of column A and drag your mouse to the right to select the adjacent columns. Make sure you select at least one column on both sides of column A.
2. **Right-click on the Selected Columns:**
- After selecting the adjacent columns, right-click on any of the selected column headers. This will open a context menu.
3. **Choose "Unhide":**
- From the context menu, select the "Unhide" option. This will unhide any hidden columns within the selected range, including column A.
After following these steps, column A should be visible again, along with any other previously hidden columns within the selected range. If column A was the only hidden column, it will now be visible, and you can continue working with it as usual.