The correct response is: Article II, Section 2 gives the president the role of commander in chief.
This section of the Constitution is vital for providing for the common defense as it designates the president as the highest authority in the military. This role allows the president to make quick and decisive actions in times of conflict or military threat, ensuring that the nation can effectively respond to dangers and maintain national security. The ability to command the armed forces enables coherent military strategy and organization, which is essential for protecting the country and its interests.