Answer: Explain events that have occurred and help anticipate future events.
Step-by-step explanation:
A good Economic model should be able to explain a phenomenon as well as proffer solutions to it and help anticipate the future.
It is normally said that for one to know where they are going, they need to know where they have been.
Without an Economic theory that explains what has happened and what must be done, humanity will stumble from one bad decision to another when dealing with Economic problems.
Imagine if there were no models to like the Economic Lifecycle to predict or at least to offer solutions to times the Economy goes through a Depression. Or imagine if the Central Bank (FED) didn't know what to do to help the Economy. Or if the US government didn't know when to impose more taxes or less.
Economic models NEED to explain events and predict the future.