Which of the following is the strongest argument that Retiree can offer in opposition to the state's motion to dismiss this suit?
When Congress exercises power vested in it by the Fourteenth Amendment and/or the commerce clause, Congress may enact appropriate remedial legislation expressly subjecting the states to private suits for damages in federal court. 
When Congress exercises power vested in it by any provision of the Constitution, Congress has unlimited authority to authorize private actions for damages against a state. 
While the Eleventh Amendment restrains the federal judiciary, that amendment does not limit the power of Congress to modify the sovereign immunity of the states. 
While the Eleventh Amendment applies to suits in federal court by citizens of one state against another state, it does not apply to such suits by citizens against their own state.