The answer is B.
Schenk vs US involves a freedom of speech case in which Schenk encouraged American citizens to avoid the military draft during World War I.
The Supreme Court ruled this was not protected free speech because it provides a clear and present danger to American citizens. The court felt that influencing people to not join the war presented a danger to America’s war effort.
It helped solve the problems that were not directly said or pointed out in the constitution
D.
The rest seem wrong.
It could be B though
It was Grenada.
Grenada has obtained independence in 1974 and in 1979 a leftist government took power after a coup. The invasion of Grenada removed this leftist group from the government.
Soon after the invasion, Grenada had democratic elections
