The correct answer is James Madison. James Madison had a pivotal role in the drafting and ratification of the United States Constitution. He is often referred to as the "Father of the Constitution" because of his influential contributions to the Constitution's content and his leadership during the Constitutional Convention of 1787. To find the answer, you can perform a simple internet search using keywords such as "Father of the Constitution" or the names of the individuals listed as choices. It is important to verify information from reliable sources to ensure accuracy.