Answer:
a. future realizations, currently uncertain
Explanation:
Demand forecasting is the process where the demand is forecasted based on the past sales so that the estimation of the customer demand could be done. It tells the value of the goods and services that the customer will buy in near future
So according to the given options, the first option is correct as it is based on the future i.e. totally uncertain
Therefore the first option is to be chosen
