In a modern Democracy:

A. all elected officials serve for a certain number of terms then must retire

B. a high school sophomore and a senior citizen may vote at the polls together

C. a US Senator votes on immigration law on behalf of your mother through indirect ballot

D. all democracies have a two chamber system of representation

E. we, in the US, live in a direct democracy

The correct answer should be A. all elected officials serve for a certain number of terms then must retire.

Let's use the system of elimination:

B is incorrect because high school sophomores cannot vote yet (legal age for voting in the US is 18, and sophomores are 16)

C is incorrect because this is done through direct ballot

D is incorrect because there are democracies which have more

E is incorrect because a direct democracy doesn't exist anymore - it existed only in ancient Greece