Answer:
1. describe the world accurately
2. predict cause and effect
3. state its assumptions clearly
Explanation:
A good model can be defined as a physical representation of something that is morally good, ideal and perfect.
A good model should;
I. Describe the world accurately: it should be all encompassing in its description of the world at large.
II. Predict cause and effect: it should state why there is a reaction to an action.
III. State its assumptions clearly: it should be concise.