Read this passage Over the years, time series forecasting has been existence to make timely decision in the face of uncertainty about the future. The making of forecast is an essential what aspect of our life. Basically, all the of forecasting work or the premise that if we can predict that the future will be like we can modify our behaviors or the behavior of the system for better position.
The expression, "over the years" in the passage above is an example of ____________
A. Adjectival phrase B. adjectival clause C. noun phrase D. adverbial clause
