Which term means a witness may answer a question?

The term that means a witness may answer a question is "overrule." In a courtroom setting, when a judge overrules an objection raised by a lawyer, it allows the witness to respond to the question posed. This indicates that the judge has determined that the question is permissible and relevant for the witness to answer.

Other terms listed may relate to courtroom procedures but do not convey the same meaning. For example, when something is sustained, it means the judge agrees with the objection, preventing the witness from answering. Irrelevancy pertains to questions or evidence that do not relate to the case at hand, while refrain generally means to hold back or avoid, which would not apply to a witness being permitted to answer a question. Understanding these terms is crucial for recognizing courtroom dynamics and the protocols surrounding witness testimonies.