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.

D) Models are an approximation of a real system that omits all but most essential variables in a system.

Explanation: Since models try to represent a reality in nature, they have to try to include the most relevant variables, otherwise, they will be hard to manipulate and they couldn't explain any system in nature.

answer; /// i believe the correct answer is (wine) ; /// good luck

the question deals with financial planning and the answer is that dan did not stay on budget due to the fact that this guy needs to start decreasing his discretionary spending. according to the financial plan, he needed to balance his expenses and resources.