The correct answer is the Enlightenment. Thomas Jefferson, being an influential figure in the American Revolution and one of the founding fathers, was heavily influenced by the Enlightenment philosophy. This intellectual movement emphasized reason, individual rights, and the pursuit of knowledge. Jefferson's political ideas, such as the belief in natural rights, limited government, and the separation of powers, align with the principles of the Enlightenment. His drafting of the Declaration of Independence reflects these ideas and demonstrates his commitment to the Enlightenment ideals of liberty and equality.