The third answer is correct (C).
One of the democratic pillars constituted by our federation is the separation of the three powers: executive, legislative and judicial.
To the legislative power, it is necessary to create the laws and to supervise the actions of the executive power.
The Judiciary has the power to interpret and enforce laws, always guided by the Constitution.
The executive branch has the power to take decisions at the domestic and international levels, backed by the legislative branch and considered legal by the judiciary.