IF YOU KNOW THE ANSWER TO THIS QUESTION PLEASE ANSWER AND IF YOU DON'T THAN DON'T PLEASE AND THANK YOU. What two contributions did James Madison make to the United States Constitution?

a. He proposed the Three-Fifths Compromise and wrote the Preamble to the Constitution.

b. He proposed the Great Compromise and strongly supported the Federalist position.

c. He worked with Anti-Federalists to strengthen the federal government and to ensure due process.

d. He wrote the Bill of Rights and took notes during the Constitutional Convention.