Final answer:
The Declaration of Independence concludes by declaring America as a new, independent nation, making the correct answer C. declaring America to be a new nation.
Step-by-step explanation:
The Declaration of Independence concludes by declaring America as a new, independent nation. After detailing a lengthy list of grievances against King George III and expressing the philosophical foundations of the new government—namely the rights of life, liberty, and pursuit of happiness and the right of people to overthrow a government that becomes destructive of those ends—the document firmly states the intention of the colonies to sever their political connections with Great Britain.
Thomas Jefferson, a key figure in drafting the Declaration, alongside other founding fathers, affirms that the colonies have full power to levy war, conclude peace, contract alliances, establish commerce, and to do all other acts and things which independent states may of right do. Thus, the correct answer to the student's question is C. declaring America to be a new nation.