Answer:
It's D or C
Explanation:
Both make sense to me but I'm not sure. I suggest trying D, if not then C. I hope you found this helpful.
Answer:
Well, although the most prevalent example right now is of course the coronavirus pandemic, events like this have happened all throughout history. Think of the Black Death: it swept through Europe, killing tens of thousands and pretty much ending the system of feudalism. Though in modern times these pandemics have less potential to upend systems, they remain game changers. The H1N1 epidemic - the Spanish flu - sent shockwaves throughout the globe because of its scope and lethality.
This would be handle through speeches, talks, assembly's, conventions, and so on. This would be the ways that we would be able to convince the people who are coming to these places to convince them about what ever the topic that we would be speaking about.