Please help me on this !! It is a Unit Test Review and I do need some help.

Words . . . may become subject to prohibition when of such such a nature and used in such circumstances as to create a clear and present danger.

According to the ruling:

A - people had the right to say whatever they wished.

B - people were not allowed to discuss frightening or controversial topics.

C - the right to free speech had limits that could be enforced by the government.

D - the rights to free speech was overturned.