(HC)The image below is a poster distributed by the government during World War I: Enlistment poster for U. S. Army showing a large gorilla wearing a German army helmet. The gorilla is holding a bloody club in one hand and clutching a woman, symbolic of liberty in the other. Text says Destroy this mad brute Enlist U. S. Army
Public Domain

HELP ASAP PLEASE!!!

What factor made this type of poster a necessity?

the military’s inability to enforce conscription
the difficulty of paying for the war effort
the desire to turn U. S. citizens against Germany
the fear of a German invasion of the United States