Option 1: Accept -> means to receive or agree to something, but doesn't directly oppose the action of taking back a statement.
Option 2: Confirm -> means to validate or reaffirm something, the direct opposite of withdrawing or taking back a statement.
Option 3: Salvage -> means to rescue or recover, unrelated to the concept of withdrawing statements.
Option 4: Divulge -> means to reveal information, but doesn't oppose the act of retracting.
Hence, Confirm -> When you retract, you withdraw or take back a statement, while confirming means you stand by and validate what was said, making them perfect antonyms -> correct