The correct answer is A. The situation that best represents the president acting in the roles of chief legislator is vetoing a law that expands federal spending.
Explanation:
The President of the United States has the power to veto a law passed by Congress, thus prohibiting its publication and enforcement. In this way, the President is part of the system of sanction of a law, in this case, prohibiting its entry into force, although it also participates by signing the bill so that it becomes effective from that moment.
Even so, if the President vetoes the law, it returns to Congress, which in turn can approve it by a 2/3 majority to override the veto and pass the law. Therefore, the right to veto is not absolute.
