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.
The Indus river was a constant flow of natural resources. The river also made the soil very fertile and that meant good crops when planted in the right season, it also made it easy for trade boats to pass through.