What does the declaration of independence reveal about thomas jefferson, its primary author?
his opinion on the purpose of government
his ability to bring people together
his views on the trade of enslaved people
his aspirations to one day run for president

The declaration of independence reveals Thomas Jefferson's OPINIONS ON THE PURPOSE OF GOVERNMENT. 
Thomas Jefferson was the author of Declaration of Independence. The document was written in the year 1776. Initially, the document was written for the purpose of sending it to King George of Britain in order to express their desire to have their own government. The document is also the basis for the eventual creation of US constitution. The declaration express Thomas opinions on the functions of a government. 

The correct answer for the question that is being presented above is this one: "his opinion on the purpose of government." The Declaration of Independence reveal about Thomas Jefferson, its primary author his opinion on the purpose of government.