What cannot be used to rehabilitate a witness impeached for lack of truthfulness?

When a witness has been impeached for lack of truthfulness, certain methods may be employed to rehabilitate their credibility. Among these, prior consistent statements are not typically admissible for rehabilitation purposes in this context.

Prior consistent statements are generally used during the examination of a witness to support their credibility when their truthfulness is questioned, especially if the statement was made before the motive to fabricate arose. However, when a witness has been impeached for lack of truthfulness, the focus shifts to repairing their credibility through methods that speak to their reliability and character rather than relying on past statements.

In contrast, prior criminal convictions can provide context about the witness’s reliability or lack thereof, testimony from character witnesses can bolster the witness's credibility directly, and evidence of good character can rebut the specific attack on dishonesty. Thus, the correct answer clarifies that prior consistent statements alone do not serve effectively to rehabilitate a witness's credibility when their honesty has been challenged.