Final answer:
The main focus of the Declaration of Independence is the way a government should function.
Step-by-step explanation:
The main focus of the Declaration of Independence is 1) The way a government should function. Thomas Jefferson explains in the introduction how a government should operate, and in the body of the document, he describes how the king of England is not living up to these expectations. He also details the steps the colonies will take to overthrow the king and the steps the king must take to maintain the colonies. While the trade of enslaved people is briefly mentioned, it is not the main focus of the declaration.