What democratic ideal in the US Constitution is reflected in the overall trend of the graph?

b. popular sovereignty

Explanation:

The democratic ideal of Popular Sovereignty is one that is rooted at the very core of democracy. It stipulates that the authority that the Government has, is granted and sustained by the people of that nation when they vote for that Government.

In the graph, we see that the President was voted into power by people of the United States and that even though the proportion of the people who did so out of the total population was less in the past, the President was still only the president because the people voted them in. This therefore reflects Popular Sovereignty.

this is not a question its simply asking you to read and write a few sentences and   the question on the bottom its fairly easy, you can do this!

congress also has implied powers, which derive from the necessary and proper clause of the constitution and permit congress "to make all laws which shall be necessary and proper for carrying into execution the foregoing powers, and all other powers vested by this constitution in the government of the united states.