Mr. and Mrs. Miller are a highly autonomous couple. Mr. and Mrs. Miller give each other plenty of room and they share less emotionally than the other marital types. The Millers would be best categorized as which of Fitzpatrick's marital types

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.