Question

the us government made broad use of propaganda during world war ii to
ocaution people about war.
build support for the war effort.
spread false information about the germans.
keep people employed.

Explanation:

During World War II, the US government's propaganda efforts were mainly aimed at rallying public support for the war effort. Option A (caution people about war) is not accurate as propaganda was more about mobilizing support rather than cautioning. Option C (spread false info about Germans) is a misrepresentation as propaganda often used persuasive (not necessarily false) messaging to build support, and Option D (keep people employed) is unrelated to propaganda's purpose. So the correct reason for US WWII propaganda was to build support for the war effort.

Answer:

B. build support for the war effort.