Which of the following best describes the “rule of four”?

The rule of four is when the supreme court of the united states practice that permits four of the nine justices to grant a writ of certiorari. this is done specifically to prevent a majority of the court from controlling the court's docket.

United states v.  nixon, 418  u.s.  683 (1974),  was  a landmark  united states supreme court case  that resulted in a unanimous  decision  against president richard  nixon, ordering him to deliver tape recordings  and  other subpoenaed materials to a  federal  district  court.