Judicial branch.
The Supreme court has the power to rule any law unconstitutional, its called judicial review.
The correct answer in this question is B - for the first time, ordinary citizen could participate directly in government.
The reason for this is that when people started directly voting, they had more power and could directly see who will be in power in the futue as well. This in turn made them more "powerful" as they could directly influence who would be in charge of the city.
The correct answer is The federal government was ruled to get its authority directly from the people.
Federal Government is usually used to designate the highest level of executive management, generally recognized as the leadership of a state or nation. States can have different levels of government depending on the political organization of that country, such as local, regional and national governments.