Which of the following statements is true regarding a witness who is granted immunity?

A witness who is granted immunity is protected from being prosecuted for any information related to their testimony. This means that they are compelled to testify without the fear of incriminating themselves based on what they say. The immunity typically covers only the information provided in the course of their testimony, ensuring that prosecutors cannot use that self-incriminating information against the witness in a court of law. This principle upholds the witness's right to testify freely, thereby serving the interests of justice by allowing relevant evidence to be presented without discouraging witnesses from coming forward.

The other statements are inaccurate. A witness cannot refuse to answer all questions when granted immunity; rather, they are obligated to answer, as the assurance of immunity is intended to encourage cooperation. Immunity does not provide protection solely during the trial, as it generally extends to any related investigatory proceedings. Finally, while a witness's statements made under immunity are protected from prosecution, this does not guarantee their admissibility in court, as other legal principles may affect whether statements can be introduced as evidence.