Answer: A.Validate and implement the results.
The final step in a forecasting system is to validate and implement the results. This can be similar to a presentation. After going through all the steps from the planning, researching, and gathering of data, making the forecast, validating and implementing the results will be the last thing that needs to be done.
Explanation:
Solids have a definite shape and definite volume.
He arranged his periodic table by each elements atomic mass
The Speed In Kilometers per year is 63.072.
