It limited the power of the king
The correct answer is C. Both a constitutional republic and the British Monarchy have its own legislative body, which is the branch of the State responsible of making laws.
The constitutional republics have a legislative body in order to keep the separation of powers within the state, which guarantees the full existance of democracy.
The British Parliament was created to restrict King's powers. In this way, the Monarchy ceased to be absolute and started to be under parliamentary control from society.
It was a senseless war.
Millions died, essentially, for nothing because the men who “crafted” (crafted implies workmanship and quality) the Treaty of Versailles focused more on vengeance than at addressing the root causes of the war. The treaty created a breeding ground for things that would bring on the Second World War.
That is one opinion! Have a great day :)