He could not confirm that he had made any such statement.

The correct answer is: C. deny

To deny something is to state that it is not true. In this case, the speaker is denying that they made a certain statement.

The other options are:

• A. reject:
  Subscribe on YouTube
  to refuse to accept something. In this case, the speaker is not refusing to accept the statement, they are denying that they made it.
• B. avoid: to keep away from something. In this case, the speaker is not avoiding the
  Join Our Telegram Channel
  statement, they are denying that they made it.
• D. refuse: to decline to do something. In this case, the speaker is not refusing to do something, they are denying that they made a certain statement.