Seneca has just applied conditional formatting and realizes that she has made a mistake. Which action should she take to fix the mistake? Clear the rule she created by going to the Conditional Formatting Rules Manager dialog box and deleting the rule.
Clear all rules that have been applied to the worksheet or selected range by clicking the Clear Rules button.
Use the Undo button or Ctrl+Z.
Right-click the area where the conditional formatting rule has been applied, and select Clear Rule from the menu list.

If Seneca has not done anything since the conditional formatting she can undo what her last action was. This is done by either pressing control+Z or by clicking on the undo icon.

If other actions have been done, there are a few more steps that need to be taken in order to clear the formatting. They are:

1. Select the cell or cells whose formatting you want to delete.

2. Display the Home tab of the ribbon.

3. In the Editing group, click Clear | Clear Formats.

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