How do americans exercise popular sovereignty? by serving on juries by voting for representatives through checks and balances by revising the constitution

By voting for representatives or by serving on juries. It’s between those two I am 100% certain

Ithink the answer is d. the lower appellate and trial courts in the state. 

Americans often speak of their country as one of several large regions.  these regions are cultural units rather than governmental units --  formed by history and geography and shaped by the economics, literature and folkways that all the parts of a region share. what makes one region different from another? a region's multicultural heritage as well as distinct demographic characteristics like age and occupation make regions different and special. within several regions, language is used differently and there are strong dialects. there are also differences in outlook and attitude based on geography.