Which of the following pairs of words is an example of nuance?

Each line has two sentences. the first is true. mark yes if this means the second statement is also true. mark no/maybe if the second part is wrong or if more information is needed. great britain is a monarchy with a constitution. great britain is a republic. some nations have both a president and a prime minister. the people get to elect both. elites are people with wealth and social power. in an oligarchy, regular citizens often answer to elites. vatican city is a theocracy run by the head of the catholic church. such rulers are never elected by anyone.