The first question is answer b
The second question is answer c
<span>A race between candidates for elective office is called a campaign.</span>
A document-based essay shows how the theme under discussion relates to the time period of your attention. The purpose of writing it is for you to study the documents your professor gave you to learn and communicate an important idea about history. The writing is evidence founded so it tends to prove a point and for that you need facts and details (option A).
It's important because it establishes that America is a nation defined by the people. It outlines the goals of the government. Here I quote some: "To establish a more perfect union, establish justice, ensure domestic tranquility, provide for the common defense, promote the general welfare, secure the blessings of liberty to ourselves and our posterity."
Hope this helped! :)