C. Which fundamental principle means that the government can only do what the people give it the
power to do?

well if the people sign a potition for a cause and that potition as enough signetures on it than the government would be able to pass it potition. Another example if you vote for a president than not just your vote will decide the election and various amount of people have to vote to decide the election so that president cant ge into office unless people vote for him.

Explanation:

an aneroid barometer is different from a mercury barometer in that it provides readings that increase as air pressure increases.

hope it : )

explanation:

may i ask what challenges?