This is an opinion. It may not be that exciting to everyone else.
1. Coronavirus
2. Virus
3. All around the world.
4. 2019-2021 (current)
5. It impacted the world in an unexpected way. No one expected a virus to come out.
The correct answer is C: The setting reveals that the village population is small and maintains a country lifestyle. Despite the relative "growth" of the village, it still has less than five hundred people, who evidently lead very rural lives. The box used in the ritual, despite its importance, is stored away with little care (it spent a year in a barn, another in the post office), as if it were unthinkable that anyone would steal it. This is typical of a small village where everybody knows each other.
