Question

The committee system in Congress is required by which article of the Constitution

Answer 1

I believe the answer is that the committee is not required by the Constitution. It was actually required by a separate bill that was passed by Congress.

Answer 2

I don't think that the committee system was required by any article in the Constitution, it was some other separate thing but right now I cannot recall the name, I will say it in the comments when I remember. Hope this helped! :)