Which factor has remained constant in relation to the operation of the federal government?

A. the existence of political opposition parties

B. The predominance of the Republican Party

C. The tendency of the Executive branch to seek more power

D. The idea that civil liberties have always been respected

Option A

Explanation:

In democracy, the opponent includes one or even more national or regional parties or other formed organisations that are objected in the political power of a area, province, state, nation or even other political institution, primarily politically, to the administration, faction, or community. Opposition party works as one the major pillars for democracies.

Federal government came into existence after the concept of democracy and democracy can only be achieved when people have the alternative to choose their representative.