Answer:
C. popular sovereignty and representative democracy
Step-by-step explanation:
In America, the concept of popular sovereignty is enshrined in the constitution. The government in America is meant to serve its citizens, and the citizens have the right to depose it.
The concept of representative democracy is implied in the government structure of the country. The president and members of congress are elected by popular vote to represent the people, and can be removed by the people in case they do not agree with their actions.