Which excerpt from the Constitution expresses the principle of federalism? O "The powers not delegated to the United States... are reserved to the States respectively. ..."

O "The President shall have power to fill up all Vacancies that may happen during the Recess of the
Senate..."

O "The Judges, both of the supreme and inferior Courts, shall hold their Offices during good
Behaviour..."

O "All legislative Powers herein granted shall be vested in a Congress of the United States"