Justices on the U.S. Supreme Court may serve for life. Option D is correct.
Under The Unites States Constitution, justices "shall hold their offices during good behavior" (unless appointed during a Senate recess). When saying "good behavior," it means that justices are allowed to serve for the remainder of their lives, unless they are impeached and convicted by Congress, resign, or retire.
The Supreme Court of the United States is the highest ranking judicial body in the United States.
