Governments are instituted among men deriving their just powers from the consent of the governed, that when ever any form of government becomes desctructive of theseends it is the right of the people to alter or abolish it. What theory is reflected in this portion of the declaration of independence

This portion of the Declaration of Independence reflects the theory of social contract.

The theory reflected in this portion of the Declaration of Independence is the theory of social contract.

The theory that is reflected in this portion of the Declaration of Independence is known as the "social contract theory."

The social contract theory essentially posits that governments are formed through a voluntary agreement, or a social contract, between the people and their rulers. It suggests that individuals willingly give up some of their freedoms and submit to the authority of the government in exchange for protection of their natural rights and the promotion of the common good.

The excerpt you mentioned from the Declaration of Independence expresses the idea that governments derive their just powers from the consent of the governed. It states that if a government fails to serve its purpose of protecting the rights and well-being of its citizens, the people have the right to alter or abolish it and establish a new one. The underlying concept is that governments exist to serve the interests of the people and should be accountable to them.

In summary, the theory reflected in this portion of the Declaration of Independence is the social contract theory, which emphasizes the consent of the governed and the right of the people to alter or abolish a government that no longer upholds its end of the social contract.