I’d say A. If you grab a knife you could be shot or stabbed and if you scream for help then you might be caught and killed. Try to escape then call the police
Periodization is the division of time into periods that show some kind of characteristics, to facilitate the study of history. An example of periodization is distinguishing the Dark Ages as a period.
Among the options periodization is visible in b. dividing China's history based on which dynasty ruled the country.
