Final answer:
The false statement is that the President serves a three-year term.
Step-by-step explanation:
The false statement about the U.S. Constitution is D) The President serves a three-year term. The President actually serves a four-year term. The Constitution was written in 1787 (option A) and has been amended 27 times (option B). The Bill of Rights is indeed the first ten amendments to the Constitution (option C).