Which scenario best illustrates the principle of popular sovereignty?

a. states retain rights over state laws, while the federal government has power over foreign affairs
b. the president signs treaties, and congress approves them
c. members of congress vote laws that the majority of americans support
d. voters choose representatives rather than voting on bill directly

Answer is C (member of Congress vote laws that majority of Americans support)

The third alternative is correct (C).

Democracy is the system where the population chooses its representatives by voting to make decisions on behalf of the population. That is, it is a way of transferring the power of the people to some people who have been elected. Thus, at a time when members of Congress vote for laws that most Americans support, they are exercising the essence of the democratic regime, which is to make decisions according to the wishes of the majority of the population.