Which political principle is set forth in this quote from the declaration of independence?

"that to secure these rights, governments are instituted among men, deriving their just powers from the consent of the governed."

a. rule of law

b. individual rights

c. popular sovereignty

d. natural rights

Which statement is a good description of a model? a) models are a description of nature based only on one or two variables. b) models are testable ideas but they are not very to most people. c) models are a description of nature that predicts more accurately than real events. d) models are an approximiation of a real system that omits all but most essential variables in a system.