Mark views nonwhites with skepticism. he thinks they are all trying to take something for nothing. however, he is too worried about the social repercussions to act on his feelings. mark is a(n)

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.