Which of the following is true about the powers granted by a subpoena?

The power granted by a subpoena is primarily to compel attendance in court or to ensure that a witness or evidence is present for a legal proceeding. When a subpoena is issued, it is a legal order that mandates the individual to appear at a specified time and place, typically for the purpose of providing testimony or producing documents relevant to a case. Noncompliance with a subpoena can lead to legal penalties, including contempt of court.

The other options do not accurately reflect the nature of a subpoena. For instance, while individuals may feel that complying with a subpoena is voluntary, legally, it is intended to be mandatory, and ignoring it can have serious repercussions. Additionally, simply being busy does not negate the obligation to respond to a subpoena. Lastly, while legal counsel must comply with court procedures, attendance in court under a subpoena is not optional for any individuals named therein, including witnesses.