The correct answer is (C) To erase; to obliterate; to wipe out; to rub out; to eclipse; or to cause to be canceled or forgotten. Also, to make oneself inconspicuous; to treat or regard oneself as unimportant.

Efface comes from Middle French effacer.

Examples of use:

• It took one big win in Los Vegas to efface the earlier losses of Atlantic City.
• The months in the tropics effaced his memories of severe cold and ice.