What was the ruling in schenck vs the us ?

That the freedom of speech protection afforded in the U.S. Constitution's First Amendment could be restricted if the words spoken or printed represented to society a “clear and present danger.”

Explanation:

This is also why it is illegal to say "Fire!" in a large crowd when there is no fire. It causes unecessary panic and can even be detrimental to people in the crowd. Free speech does not mean speak carelessly! Hope it helps.

i beleive that d is the right answer

civil disobedience, refusal to obey the demands or commands of a government or occupying power, without resorting to violence or active measures of opposition