Final answer:
Elbridge Gerry and some other Founding Fathers wanted a "Bill of Rights" added to the Constitution to protect individual liberties.
Step-by-step explanation:
Some Founding Fathers, like Elbridge Gerry, wanted a "Bill of Rights" (Option D) added to the Constitution if they were to support it. This addition would serve to protect the liberties and rights of the people by explicitly enumerating individual rights. This desire arose from a concern over the potential for government tyranny and a means to ensure that the newly established government would not infringe upon the fundamental rights that the Revolution had been fought to protect.