What is a "subpoena"?

A subpoena is indeed a legal document that compels an individual to appear in court or to produce documents or evidence necessary for a legal proceeding. It serves as a tool to ensure that key evidence or testimony is available for a case, playing a fundamental role in the administration of justice. The document outlines the obligation of the recipient to comply with the demand, and failure to respond can result in legal consequences, including contempt of court.

The other options do not accurately describe what a subpoena is. A voluntary statement made in court refers to witness testimony, which is fundamentally different from the mandatory nature of a subpoena. A request for judgment from a jury pertains to jury instructions or motions made within a trial context, which is also not related to subpoenas. Lastly, a type of legal argument presented by an attorney involves persuasive reasoning during a trial or in writing but is separate from the procedural function of a subpoena. Thus, the definition of a subpoena aligns specifically with its legal purpose in ensuring compliance with court orders.