Answer:
A. a Bill of Rights
B. Articles I, II, and III to separate powers in the government
Explanation:
In its first three articles, the U.S. Constitution outlines the structure of the government, divides the power among three branches and outlines its functions: Article I establishes the legislative branch consisting of a bicameral Congress, Article II outlines the Executive Branch whose power is vested in the President and Article III sets the Judicial Branch consisting of the Supreme Court and inferior courts that "the Congress may from time to time ordain and establish."
The Constitution also contains a Bill of Rights which are the ten first amendments. These were created to protect people's freedoms and put limitations on the power of the government by guaranteeing people a fair trial, the right to express, to practice the religion they want and to privacy, among others.
