Answer:
The right answer is data about the economy from the past
Step-by-step explanation:
Economists make predictions by a process known as economic forecasting. They do this by taking the past data into account and keeping that data in mind they use various methods and mathematical models to plot graphs and variations to predict the economy of a certain business or government for a certain period of time. The past record of economy and present scenario can easily allow economists to predict the future as well.