Final answer:
The correct summary of Wilson's argument is that having oversight of the executive branch is an essential function of Congress, with Wilson prioritizing this role over the legislative function.
Step-by-step explanation:
Woodrow Wilson's argument regarding the role of Congress is that oversight of the administration is a crucial aspect of its duties. Specifically, Wilson emphasizes that Congress should prioritize its 'informing function' or oversight role over its legislative function. This includes being vigilant in examining every affair of government, serving as the eyes