Answer:
A. Father of the Constitution
Step-by-step explanation:
A constitution can be defined as a set of written laws and principles which is typically used to determine the power and authority of the government, as well as guarantee the fundamental rights of its citizens.
James Madison was an American expansionist, diplomat, statesman and founding father of the Constitution of the United States of America. He was born on the 16th of March, 1751 and he was elected to serve as the fourth president of the United States of America from 1809 to 1817.
The title that was given to James Madison for his work at the Constitutional Convention is Father of the Constitution because he played a significant role in the drafting and promotion of the US Bill of Rights and the Constitution.