Concept:"Ultra vires" is a Latin term meaning "beyond the powers" or "beyond legal authority."
Explanation:When a superior court declares an action of the executive ultra vires, it means that the executive acted outside the powers granted to it by the constitution or the law.
Such an action has no legal standing.
The action is therefore considered illegal, invalid, and of no effect.
It does not mean the executive should leave power or that a vote of no confidence has been passed.
It also does not imply that the judiciary is more powerful than the executive in all matters.
It simply means the executive has exceeded its lawful limits and the court has nullified that action.
Answer:D. The action is illegal and of no effect.