Final answer:
The conclusion from the Declaration of Independence that is best supported is that governments exist to protect the people who created them.
Step-by-step explanation:
The conclusion from the Declaration of Independence that is best supported by the reasoning in this paragraph is option A - Governments exist to protect the people who created them.
The reasoning in the paragraph states that governments are instituted among men to secure the rights of the people, and their powers come from the consent of the governed. This aligns with the idea that governments exist to protect the people who created them, as stated in the Declaration of Independence.
Learn more about The purpose of governments and the reasoning behind the Declaration of Independence