The correct response is:
Article II, Section 2 gives the president the role of commander in chief.
This section of the Constitution designates the president as the commander in chief of the armed forces, which is crucial for providing for the common defense. By making the president the leader of the military, it ensures that there is a single, accountable authority to make quick decisions in times of national threat or conflict. This role helps streamline military command and responses, allowing for more efficient management of national defense and military operations.