B) the citizens elect people to represent them in government
a republic is a government structure in which the people elect representatives to represent them in government decisions.
"A political process in which the PEOPLE control the government through elected political officials. This is also called a republic. ... A form of democracy in which the people elect representatives and give them the responsibility and power to make laws and conduct government."
For example, the United States of America is considered a republic because (as we recently did) we elect our leaders, such as the president or mayor.