It seems that you have missed the essential options for this question, but anyway, here is the answer. The statement that explains the effect of demobilization following WWI on the economy is this: <span>The demand for industrial workers increased, which benefitted the soldiers returning from war. Hope this answer helps.</span>
The options that are listed above are known to be the types of propaganda. And here are the answers to the given situations above:
1. B. TESTIMONIALS
2. A. NAME CALLING
3. D. GLITTERING GENERALITIES
4. C. VOLUNTEERISM
Hope this answers your question.
Basically saying you don’t realize you’re repeating history until it’s too late
