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.
