Question

using this type of propaganda during world war ii —
led the american government to censor news about the war
forced the japanese to surrender to american forces
allowed americans to become sympathetic to enemy forces
caused many americans to stereotype japanese citizens

Explanation:

During World War II, propaganda often used dehumanizing or stereotypical imagery. This poster with a monkey (a common dehumanizing symbol) and the text could lead to stereotyping. Censorship (first option) was more about controlling info flow, not directly from this propaganda. The poster didn't force surrender (second option). And it was unlikely to make Americans sympathetic (third option). Stereotyping through such propaganda was a common effect.

Answer:

caused many Americans to stereotype Japanese citizens