Plz help me plz:))plz

Completar fill in the blanks with words from the list based on the panorama cultural video.

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.

Statement best describes the main reason behind the establishment of government in the early river valley civilization‘s