Part A:
The clauses incorporated into the Constitution, as provided in the excerpts, serve to C. to prevent one branch of the government from becoming too powerful. The process of passing legislation requires the involvement of both the House of Representatives and the Senate, as well as the President, establishing checks and balances. The Treaty-making powers and the impeachment process also illustrate the intention to distribute and limit power among the different branches of government, ensuring that no single branch can dominate the others.
Part B:
The additional detail from the Constitution most directly associated with the answer to Part A is A. "This Constitution, and the Laws of the United States which shall be made in Pursuance thereof; . . . shall be the supreme Law of the Land; and the Judges in every State shall be bound thereby, any thing in the Constitution or Laws of any State to the Contrary notwithstanding."
This statement underlines the supremacy of the Constitution and solidifies the framework of checks and balances, demonstrating that all branches of government must operate within the confines of the Constitution, thereby preventing any branch from becoming overly powerful.