Which of the following is an example of Maslow's third level of needs?

To compare the conclusions of a model with what actually happens, historical data are entered into the model as ________

A) endogenous variables B) exogenous variables C) equations D) predictions E) policies

Scarcity is a condition that exists when

A) there is a fixed supply of resources relative to the demand for the product. B) there is a large demand for a product. C) resources are not able to meet the entire demand for a product. D) All of the above