Would You Use a Physical Model or a Conceptual Model

Multiple Choice

Would you use a physical model or a conceptual model to describe the following: a gold coin,dollar bill,car engine,air pollution,virus,spread of sexually transmitted disease?

A) conceptual model-gold coin,car engine,virus; physical model-air pollution,spread of sexually transmitted disease,dollar bill
B) physical model-gold coin,car engine,virus; conceptual model-air pollution,spread of sexually transmitted disease; dollar bill,which could represent wealth,may well be described by either model.
C) You could adequately describe all of the topics by either model.The choice depends only on the characteristics requiring description.
D) physical model-gold coin,dollar bill,car engine; conceptual model-virus,air pollution,spread of sexually transmitted disease