Which of the following amendments to the U.S. Constitution reflects the principle of federalism?

Which of the following amendments to the U.S. Constitution reflects the principle of federalism? (3 points)

a. The 1st Amendment prevents states from taking away any of the people’s rights to free speech.
b. The 4th Amendment prevents states from ordering searches and confiscating private property.
c. The 10th Amendment reserves rights to the states not assigned to the national government.
d. The 8th Amendment reserves states the right to decide appropriate punishment for criminals.