What is the practical effect of the First Amendment in US society and governance today?
A
It prohibits only state legislatures from passing laws that abridge the freedom of speech.

B
It prohibits only the federal government from passing laws that abridge the freedom of speech.

C
It prohibits both the federal government and state governments from passing laws that abridge the freedom of speech.

D
It prohibits the federal government from passing laws that are not consistent with state laws regarding the freedom of speech.